youcubed: Foot Parade (K)
youcubed (Stanford University)

This activity allows students an opportunity to think creatively about numbers.

youcubed: Foot Parade (1-2)
youcubed (Stanford University)

This activity provides students an opportunity to think creatively about pairs of numbers and their sums.

youcubed: Number Talks (all ages)
youcubed (Stanford University)

Number talks, developed by Ruth Parker, are an activity you can do with your kids on a walk or in a moment you are sitting together.

youcubed: Leo The Rabbit (3-12)
youcubed (Stanford University)

This problem asks how many ways can a bunny called Leo can hop up 10 steps but, perhaps surprisingly, there is much to explore in this question!