Muncastor’s Select

This motivating rubber stamp design features the motivating message "SUPERB WORK!" and a customized teacher's name. It also features a decorative check mark. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This fun rubber stamp design features the inspiring message "Tremendous Job!" and a customized educator name. It also features a decorative star shape. It could be used by a school teacher, educator, or tutor when marking assignments, to indicate that the student has done well.

This sticker design features a black and yellow chevron-like pattern. It also features the encouraging message "VERY GOOD!" in green and purple colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and encourage a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This fun, multicolored sticker design features a pattern of star shapes of various sizes and colored a variety of colors on a black background. It also features the encouraging saying "VERY GOOD!" in red and green colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge encourage a student who has done well on a test, quiz, paper, project, or some other academic school or assignment.

This sticker design features a grid-like tiled squares pattern with various shades of green. It also features the encouraging saying "VERY GOOD!" in green and red colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and encourage a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features lots of circles/dots of various colors. It also features the encouraging message "VERY GOOD!" in purple and red colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge encourage a student who has done well on a test, quiz, paper, project, or some other academic school or assignment.

This sticker design features an eyecatching pattern involving many triangles of different sizes and different colors. It also features the motivating message "VERY GOOD!" in purple and green colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and motivate a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features a pattern consisting of orange blob-like or splotch-like shapes. It also features the encouraging message "VERY GOOD!" in purple and green colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge and motivate a student who has done well on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features stripes colored various shades of colors like pink, purple and grey. It also features the encouraging saying "VERY GOOD!" in green and blue colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and motivate a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features a pattern involving many purple dots/circles. It also features the encouraging saying "VERY GOOD!" in green and purple colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and encourage a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features an eyecatching pattern of stripes (or lines) of various colors. It also features the motivational saying "VERY GOOD!" in blue and red colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and motivate a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This encouraging rubber stamp design features the inspiring feedback message "WHAT A GREAT JOB!" and a personalized teacher's name. It also features a decorative star shape. It could be used by a school teacher, educator, or tutor when marking assignments, to acknowledge that the student has done well.

This inspiring rubber stamp design features the positive message "WONDERFUL!" and a custom teacher's, educator's or tutor's name. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This motivating rubber stamp design features the inspirational message "You Did A Great Job!" and a custom teacher name. It also features a decorative star shape. It could be used by a teacher, educator, instructor, or tutor when marking assignments, to indicate that the student has done well.

This motivating rubber stamp design features the positive feedback message "YOU WORKED SO HARD!" and a customized tutor's name. It also features a decorative checkmark. It could be used by a teacher, educator, or tutor when grading student work, to indicate that a student has done an exceptional job.

This inspirational rubber stamp design features the positive message "YOU’RE AN EXPERT AT THIS!" and a custom teacher's or educator's name. It also features a decorative musical note. It could be used by a teacher, educator, instructor, or tutor when marking assignments, to indicate that the student has done a great job.

This encouraging rubber stamp design features the positive message "YOU’VE GOT THIS DOWN PAT!" and a customized teacher name. It also features a decorative check mark. It could be used by a school teacher or educator when marking assignments, to acknowledge that the student has done well.

This neutral rubber stamp design features the message "Please Review, Correct, Initial, And Send Back Promptly", and a line that a signature or initials could be written above. It also features a customized name. It could perhaps be used by a tutor, educator or teacher to ask a student’s parent(s) or guardian(s) to look over the student’s work on a quiz, a project, an exam, or some other school assignment.

This respectable rubber stamp design features the message "Please Sign And Return To", along with a line for a signature or initials to be written above. It also features a customized teacher’s name. It could perhaps be used by a teacher, educator or tutor to ask a student’s parent(s) or guardian(s) to look over the student’s work on a project, an exam, a paper, or some other school assignment.

This basic rubber stamp design features the message "Please Review, Correct, Sign & Return", along with a line for a signature or initials to be written above. It could perhaps be used by a teacher or an administrative professional to request that somebody review and acknowledge the contents of a document.

This basic rubber stamp design features the message "Please Review, Correct, Sign & Return", in addition to a line for a signature or initials to be written above. It also features a customizable teacher or tutor name. It could perhaps be used by an educator, tutor or teacher to ask a student’s parent(s) or guardian(s) to review and acknowledge the mark that a student received on a quiz, a test, an essay, a paper, or some other school assignment.

This simple rubber stamp design features the message "Please Review, Initial And Return", along with a line for a signature or initials to be written above. It also features a custom name. It could perhaps be used by a teacher, educator or tutor to request that a student’s parent(s) or guardian(s) review the student’s work on a test, paper, or some other assignment.

This basic rubber stamp design features the message "Please Review, Sign & Return Promptly", plus a line for a signature or initials to be written above. It also features a custom tutor name. It might be used by a tutor, teacher or educator to ask a student’s parent(s) or guardian(s) to check over the student’s work on a project, an exam, a quiz, or some other school assignment.

This basic rubber stamp design features the message "Please Review, Sign And Return", along with a line that a signature or initials could be written above. It could perhaps be used by a teacher or an administrative professional to request that somebody review and acknowledge the contents of a document.

This basic rubber stamp design features the message "PLEASE SIGN & RETURN PROMPTLY TO", along with a line for a signature or initials to be written above. It also features a custom educator’s name. It could perhaps be used by a teacher, educator or tutor to ask a student’s parent(s) or guardian(s) to review and acknowledge the mark that a student received on a test, quiz, paper, or some other school assignment.

This plain rubber stamp design features the message "Please Sign & Return Promptly To", along with a line for a signature or initials to be written above. It also features a custom educator’s or teacher’s name. It could perhaps be used by a teacher, educator or tutor to ask a student’s parent(s) or guardian(s) to review the student’s work on a test, paper or some other assignment.

This basic rubber stamp design features the message "Please Sign And Return Promptly To", plus a line for a signature or initials to be written above. It also features a customizable tutor or educator name. It could perhaps be used by a tutor, educator or teacher to ask a student’s parent(s) or guardian(s) to check over the student’s work on a paper, an essay, an exam, or some other school assignment.

This plain rubber stamp design features the message "Please Sign Here.", along with a line for a signature or initials to be written above. It could perhaps be used by a teacher or an administrative professional to request that somebody review and acknowledge the contents of a document.

This rubber stamp design features the request "PLEASE REVIEW, INITIAL & RETURN", along with a line for the written initials. It could be used by a teacher, for example, to request that a parent or guardian review and acknowledge the mark that a child received on an assignment.

This bold rubber stamp design features the message "Please Review, Sign & Return Promptly.", and a line where a signature or initials could be written above. It could perhaps be used by an educator or an administrative professional to request that somebody review and acknowledge the contents of a document.

This self-inking rubber stamp design features the request "PLEASE REVIEW, SIGN & RETURN", along with a signature line. It could be used by a teacher, for example, to request that a parent or guardian review and acknowledge the mark that a child received on an assignment.

This self-inking rubber stamp design features the request "PLEASE SIGN & RETURN PROMPTLY", along with a solid line underneath it. It could be used by a teacher, for example, to request that a parent or guardian see the mark that a child received on an assignment.

This badge design features a customizable message like "STUDENT OF THE DAY!", along with a colorful stripes pattern. It could perhaps be used by teachers to motivate, encourage and reward students who have done a good job.

This elegant rubber stamp design features the message "Please Review, Sign & Send Back", along with a line where a signature or initials could be written above. It also features a personalized teacher or tutor name. It could be be used by a tutor, teacher or educator to ask a student’s parent(s) or guardian(s) to review and acknowledge the grade that a student got on an essay, an exam, a project, a test, or some other school assignment.

This luxurious rubber stamp design features the message "Please Review, Sign, And Send Back Promptly", in addition to a line that a signature or initials could be written above. It also features a customizable educator’s name. It could perhaps be be used by a tutor, teacher or educator to ask a student’s parent(s) or guardian(s) to review and acknowledge the grade that a student received on a project, an essay, an exam, a quiz, or some other school assignment.

This basic rubber stamp design features the message "Please Review, Correct, Initial & Return", along with a line that a signature or initials could be written above. It also features a customized name. It might be be used by a tutor, educator or teacher to ask a student’s parent(s) or guardian(s) to review and acknowledge the grade that a student got on a test, a project, a quiz, a paper, or some other school assignment.

This basic rubber stamp design features the message "Please Review, Initial, And Return Promptly", along with a line that a signature or initials could be written above. It also features a customized tutor or teacher name. It might be be used by an educator, teacher or tutor to ask a student’s parent(s) or guardian(s) to review and acknowledge the mark that a student got on an exam, a project, a test, a quiz, or some other school assignment.

This luxurious rubber stamp design features the message "PLEASE REVIEW, CORRECT, SIGN, AND RETURN", in addition to a line where a signature or initials could be written above. It also features a custom teacher or tutor name. It might be used by a teacher, tutor or educator to request that a student’s parent(s) or guardian(s) review the student’s work on a project, an essay, a paper, or some other school assignment.

This plain rubber stamp design features the message "PLEASE SIGN & RETURN PROMPTLY TO", along with a line for a signature or initials to be written above. It also features a personalized tutor name. It could perhaps be used by an educator, tutor or teacher to request that a student’s parent(s) or guardian(s) check over the student’s work on a test, a quiz, a project, or some other school assignment.

This classy rubber stamp design features the message "Please Review, Correct, Sign, And Return Promptly.", and a line that a signature or initials could be written above. It might be used by a teacher or an administrative professional to request that somebody review and acknowledge the contents of a document.

This modern rubber stamp design features the message "Please Review, Initial, And Return", and a line that a signature or initials could be written above. It could perhaps be be used by an educator or an administrative professional to request that somebody review and acknowledge the contents of a document or some other paperwork.

This vintage look rubber stamp design features the message "Please Review, Initial, And Send Back Promptly", in addition to a line where a signature or initials could be written above. It might be be used by an educator or an administrative professional to request that somebody review and acknowledge the contents of a document or some other paperwork.

This elegant rubber stamp design features the message "Please Review, Correct, Sign & Send Back", along with a line where a signature or initials could be written above. It could perhaps be be used by an educator or an administrative professional to request that somebody review and acknowledge the contents of a document or some other paperwork.

This contemporary rubber stamp design features the message "Parent/Guardian: Please Review, Initial & Return.", plus a line where a signature or initials could be written above. It could be used by a teacher or an administrative professional to request that somebody review and acknowledge the contents of a document.

This respectable rubber stamp design features the message "Please Review, Sign & Return Promptly.", and a line that a signature or initials could be written above. It could perhaps be used by an educator or an administrative professional to request that somebody review and acknowledge the contents of a document.

This fun rubber stamp design features the encouraging message "A+ WORK!" and a customized teacher's, educator's or tutor's name. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that a student has done well.

This motivating rubber stamp design features the message "AMAZING JOB!" and a customized teacher name. It also features a decorative star outline shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This fun rubber stamp design features the encouraging message "GREAT JOB!" and a customized teacher's name. It also features a decorative musical note. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that the student has done well.

This motivating rubber stamp design features the positive message "NICE WORK!" and a custom teacher's name. It could be used by a teacher, educator, or tutor when grading student work, to acknowledge that a student has done an exceptional job.

This fun rubber stamp design features the message "PERFECTION!" and a customized educator's name. It also features a decorative star outline shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This motivating rubber stamp design features the motivating message "SUPER WORK!" and a custom teacher's or educator's name. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that the student has done well.

This motivating rubber stamp design features the message "SUPERB WORK!" and a customized teacher name. It could be used by a teacher or educator when grading student work, to acknowledge that a student has done an exceptional job.

This sticker design features a pattern of stripes (or lines) of various widths, colored green, yellow, blue or white. These colors were inspired by those of the national flag of Brazil. It also features the encouraging message "VERY GOOD!" in purple and green colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and motivate a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features a pattern of stripes (lines) colored yellow, green and red. These colors were inspired by those of the national flag of Lithuania. This could be a great gift for somebody from Lithuania, or perhaps for somebody who just really likes the country of Lithuania or Lithuanian culture. It also features the motivational saying "GREAT WORK!" in green and blue colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge encourage a student who has done well on a test, quiz, paper, project, or some other academic assignment.

This simple, friendly rubber stamp design features the message "PLEASE SIGN AND RETURN PROMPTLY TO", along with a line that a signature or initials could be written above. It also features a personalized educator’s name. It could perhaps be used by a teacher, educator or tutor to ask a student’s parent(s) or guardian(s) to review and acknowledge the mark that a student received on a test, quiz, paper, or some other school assignment.

This motivating rubber stamp design features the encouraging message "100% PERFECT!" and a personalized teacher name. It also features a decorative star shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This motivating rubber stamp design features the message "100% PERFECT!" and a customized teacher name. It also features a decorative musical note. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This encouraging rubber stamp design features the message "100% PERFECT!" and a custom teacher name. It also features decorative star shapes. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This positive rubber stamp design features the encouraging message "A+ JOB!" and a personalized teacher's or educator's name. It could be used by a teacher, educator, or tutor when marking assignments, to indicate that the student has done a great job.

This encouraging rubber stamp design features the inspiring feedback message "A+ WORK!" and a custom teacher's name. It also features a decorative check mark icon. It could be used by a school teacher, educator, or tutor when marking assignments, to acknowledge that a student has done well.

This motivating rubber stamp design features the motivational message "AMAZING!" and a customized educator's name. It could be used by a teacher or educator when grading student work, to acknowledge that a student has done an exceptional job.

This inspiring rubber stamp design features the encouraging message "EXCELLENT WORK!" and a customized educator's name. It could be used by a teacher, educator, or tutor when marking assignments, to indicate that the student has done a great job.

This encouraging rubber stamp design features the encouraging message "GREAT JOB!" and a custom teacher name. It could be used by a teacher, educator, or tutor when grading student work, to acknowledge that a student has done an exceptional job.

This inspirational rubber stamp design features the message "GREAT JOB!" and a customized teacher's name. It could be used by a teacher, educator, or tutor when marking assignments, to indicate that the student has done well.

This encouraging rubber stamp design features the message "GREAT WORK!" and a customized educator's name. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This encouraging rubber stamp design features the message "GREAT WORK!" and a personalized teacher name. It also features a decorative star shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This encouraging rubber stamp design features the inspiring message "GREAT WORK!" and a custom educator's name. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that a student has done well.

This positive rubber stamp design features the motivating message "MARVELOUS WORK!" and a customized teacher name. It also features a decorative check mark. It could be used by a teacher or educator when grading student work, to acknowledge that a student has done an exceptional job.

This encouraging rubber stamp design features the message "NICE JOB!" and a customized educator's name. It also features a decorative heart shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This motivating rubber stamp design features the motivational message "NICE RESULTS!" and a customized teacher name. It also features a decorative musical note. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This motivating rubber stamp design features the motivating message "NICE RESULTS!" and a customized educator's name. It also features a decorative check mark. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This encouraging rubber stamp design features the message "NICE WORK!" and a customized teacher's name. It also features a decorative star shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This encouraging rubber stamp design features the motivational message "PERFECT JOB!" and a personalized educator's name. It also features a decorative star shape. It could be used by a teacher or educator when grading student work, to acknowledge that a student has done an exceptional job.

This positive rubber stamp design features the encouraging message "PERFECT!" and a customized teacher's name. It also features a decorative check mark. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This encouraging rubber stamp design features the positive message "SUPER JOB!" and a custom teacher's or educator's name. It also features a decorative check mark. It could be used by a teacher, educator, or tutor when grading student work, to indicate that a student has done an exceptional job.

This encouraging rubber stamp design features the message "SUPER WORK!" and a customized teacher's name. It also features a decorative musical note. It could be used by a teacher or educator when grading student work, to acknowledge that a student has done an exceptional job.

This encouraging rubber stamp design features the motivational message "SUPERB JOB!" and a personalized educator's name. It also features a decorative star outline shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This motivating rubber stamp design features the message "SUPERB WORK!" and a customized educator's name. It also features a decorative check mark. It could be used by a teacher or educator when grading student work, to acknowledge that a student has done an exceptional job.

This motivating rubber stamp design features the motivating message "SUPERB WORK!" and a personalized educator name. It also features a decorative musical note. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that the student has done a great job.

This motivating rubber stamp design features the inspiring message "YOU KNOW THIS WELL!" and a personalized tutor's name. It could be used by a teacher, educator, instructor, or tutor when marking assignments, to acknowledge that the student has done well.

This fun, girly sticker design features rows of light pink colored heart shapes within dark pink colored stripes, and dark pink colored heart shapes within light pink colored stripes. It also features the encouraging message "GREAT WORK!" in green and blue colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge and motivate a student who has done well on a test, quiz, paper, project, or some other academic assignment.

This sticker design features a grid-like abstract pattern of squares or tiles colored shades of colors like gray, purple, beige and blue. It also features the encouraging saying "VERY GOOD!" in blue and red colored text. Stickers like these could perhaps be used by teachers, educators or tutors to acknowledge and motivate a student who has done very good work on a test, quiz, paper, project, or some other school or academic assignment.

This sticker design features a pattern involving various music notes and music notation symbols colored a variety of colors. It also features the encouraging saying "GREAT WORK!" in red and green colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge encourage a student who has done well on a test, quiz, paper, project, or some other academic assignment.

This sticker design features green dollar sign symbols within yellow stripes, and yellow dollar sign ($) symbols within green stripes. It could make a great gift for somebody who works in the finance industry (such as an accountant, or an investor, or in banking), or perhaps for somebody who is into collecting monetary bills and coins. It also features the message "Student of the Week!" in yellow text within a dark colored band. It could perhaps be used by a teacher, educator or tutor to acknowledge and praise a student who has had a very good week.

This sticker design features an abstract splotchy cloudy pattern that could be said to resemble the appearance of some watercolor paintings. It features various shades of colors like green, red and orange. It also features the message "Student of the Week!" in yellow text within a dark colored band. It could perhaps be used by a teacher, educator or tutor to acknowledge and praise a student who has had a very good week.

This sticker design features stripes colored various shades of blue, beige and brown. They're inspired by the colors of a wheat field setting during harvest. The blues are inspired by the colors of the daytime sky, while the browns and beiges are inspired by the colors of the wheat being harvested. It also features the message "Student of the Week!" in yellow text within a dark colored band. It could perhaps be used by a teacher, educator or tutor to acknowledge and praise a student who has had a very good week.

This sticker design features stripes with colors inspired by the colors of an ice hockey arena rink. The blue is inspired by the rink's two blue lines, and the red by the center red line. The yellow is inspired by the yellow kick plate at the bottom of the boards. The white/gray colors are inspired by the colors of the boards and the ice. It also features the encouraging saying "GREAT WORK!" in red and blue colored text. Stickers like these could perhaps be used by a teacher, an educator or a tutor to acknowledge encourage a student who has done well on a test, quiz, paper, project, or some other academic assignment.

This inspiring rubber stamp design features the motivational message "EXEMPLARY!" and a personalized teacher's, educator's or tutor's name. It also features a decorative check mark. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that the student has done well.

This fun rubber stamp design features the message "100% PERFECT!" and a personalized tutor name. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This inspirational rubber stamp design features the inspiring message "AMAZING!" and a custom tutor name. It also features decorative beamed quavers. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done well.

This positive rubber stamp design features the motivating feedback message "Fine Effort!" and a customized tutor name. It could be used by a school teacher, educator, or tutor when grading student work, to indicate that a student has done an exceptional job.

This positive rubber stamp design features the message "MARVELOUS WORK!" and a custom tutor name. It also features a decorative star shape. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.

This fun rubber stamp design features the message "NICE WORK!" and a custom educator's name. It could be used by a teacher, educator, or tutor when grading student work, to indicate that a student has done an exceptional job.

This motivating rubber stamp design features the message "Perfect Job!" and a personalized educator's name. It also features a decorative checkmark. It could be used by a teacher, educator, or tutor when marking assignments, to indicate that a student has done well.

This fun rubber stamp design features the encouraging message "WONDERFUL WORK!" and a personalized teacher's, educator's or tutor's name. It could be used by a teacher, educator, or tutor when marking assignments, to acknowledge that the student has done well.

This basic rubber stamp design features the message "Please Review, Sign And Return", along with a line that a signature or initials could be written above. It also features a customizable teacher’s or educator’s name. It could perhaps be used by a teacher, educator or tutor to ask a student’s parent(s) or guardian(s) to review the student’s work on a test, paper or some other assignment.

This plain rubber stamp design features the message "PLEASE REVIEW, SIGN AND SEND BACK.", along with a line that a signature or initials could be written above. It might be be used by a teacher or an administrative professional to request that somebody review and acknowledge the contents of a document or some other paperwork.

This basic rubber stamp design features the message "Please Sign And Return Promptly To", along with a line for a signature or initials to be written above. It also features a customizable educator’s name. It could perhaps be used by a teacher, educator or tutor to ask a student’s parent(s) or guardian(s) to review and acknowledge the mark that a student received on a test, quiz, paper, or some other school assignment.

This basic rubber stamp design features the message "PLEASE SIGN AND RETURN PROMPTLY TO", plus a line for a signature or initials to be written above. It also features a personalized educator or tutor name. It could perhaps be used by an educator, tutor or teacher to ask a student’s parent(s) or guardian(s) to check over the student’s work on a test, a project, an exam, or some other school assignment.

This inspiring rubber stamp design features the inspirational message "EXCEPTIONAL WORK!" and a custom tutor name. It could be used by a teacher or educator when marking assignments, to acknowledge that the student has done a great job.