This is a great video to help introduce, review, or reinforce how to tell time.

Elementary students will have a fun chance of reinforcing their understanding of the ones and tens places by grouping numbers of aliens in groups of 10 and writing down how many are left over. Students will better understand what whole numbers are and that they can be represented by written symbols and be represented in amounts of tens and ones.

In this worksheet students will order 7 sets of 4 numbers from least to greatest; numbers 1-20. There is space for adding a student's time if you want to turn this into a speed fluency check.

This worksheet has students comparing the length of 5 cars and the height of 5 trees. They need to decide the order from the shortest to the tallest and shortest to longest.

Students will compare the lengths of three rectangles. They will write the number 1 in the rectangle that is the longest and the number 2 in the rectangle that is the shortest.

This math worksheet would be excellent to give as the Thanksgiving holiday is coming around. This worksheet has students comparing whole numbers using greater than or less than. Get more Thanksgiving Math worksheets.

Thanksgiving Numbers Comparison Link

http://www.math-drills.com/thanksgiving/turkeycompare50_002.pdf

In this worksheet, students will read, understand , and use the words, short, shorter, shortest, tall, taller, and tallest to compare the heights of 4 different animals.

This is a fun activity where students get a bowl of Fruit Loops and then count them up and sort them by color.  Then they have to compare the numbers of each color with each other.

Comparing numbers using the Fruit Loops activity

http://www.thecurriculumcorner.com/wp-content/pdf/frootloopcompare.pdf

Students will compare the size of each pair of shapes. They will color each shape according to the comparison.

This is a great video introducing heavy and light concepts to younger students.