youcubed: Game of Totals (3-5)
youcubed (Stanford University)

This activity is a fun way to develop an understanding of quantity and ways to make a total of 25.

youcubed: Game of Totals (1-2)
youcubed (Stanford University)

This activity is a fun way to develop an understanding of quantity and ways to make a total of 10. In this activity students will have an opportunity to count, add, keep track of totals, and use visuals to see the sum.

youcubed: Game of Totals (K)
youcubed (Stanford University)

This activity is a fun way to develop an understanding of quantity and ways to make a total of 10.

youcubed: How Close to 25 (K-2)
youcubed (Stanford University)

This activity is a valuable opportunity for students to count, visualize number quantity, think about estimation, and to make visual justifications related to the approximate number system.

NRICH: How Long Are You?
NRICH (University of Cambridge)

Children use everyday language to talk about size, to compare quantities and objects and to solve problems

NRICH: I Have a Box
NRICH (University of Cambridge)

In this activity, having access to a mystery box will spark children’s imagination and encourage them to describe what they notice about the box.