In this video, Jackson uses a number line to learn how to subtract.

In this video, Alex learns the number 0 and quantity of "none" using comparative quantities 2 and 3.

In this video, Alex learns to read and write the number 0, and to understand the quantity "none" using comparative quantity 1.

In this video, Jackson learns to count to 10 using snails, counters and a 10-frame.

In this video, Daniel builds a basic equation using an addition sentence, incorporating the + sign and explaining that "and" and "+" mean the same thing.

In this video, Marta learns the concept of capacity, and how to estimate capacity using more, less and simple measuring tools.

In this video, Marta learns the concept of weight, and the measurement of weight using a scale.

In this video, Jackson uses cube trains to learn how to count on to solve addition problems.

In this video, Alex learns how to use doubles to solve a series of addition problems.

In this video, Daniel learns how to estimate the length of different objects using the units inch, foot and yard.

In this video, Daniel uses inches on a ruler to estimate the length and height of various objects.

In this video, Jackson uses a centimeter ruler to estimate the length of various objects.