In this video, Jada and Alex learn to count consecutive numbers on a number chart.

In this video, Daniel learns how to count two-digit numbers using groups of 10 (tens) and lefotver 1s (ones).

In this video, Alex uses place-value blocks to learn how the 10s and 1s place digits increase or decrease as values are added or removed from 2-digit numbers.

In this video, Marta learns how to use 10-frames and counters to solve an addition problem.

In this video, Carlos uses addition facts and sentences to solve subtraction problems, and learns that addition facts and subtraction facts are related.

In this video, Jada learns to add two numbers using tens and ones on a hundred chart.

In this video, Daniel learns how to add multiple 2-digit numbers using place value, tens and ones.

In this video, Marta learns how to regroup tens into ones in order to solve subtraction problems.

In this video, Marta learns various ways to subtract 2-digit numbers from 2-digit numbers, including regrouping and marking out.

In this video, Marta learns how to subtract 2-digit numbers using a subtraction frame.

In this video, Alex learns to add 3-digit numbers using hundreds and tens.

In this video, Alex uses different models like place-value and regrouping to solve subtraction problems.