Illuminations: Counting Back and Counting On
Illuminations (National Council of Teachers of Mathematics)

In this lesson, students model subtraction with connecting cubes while the teacher reads to them from counting books.

Illuminations: Fact Families
Illuminations (National Council of Teachers of Mathematics)

In this lesson, the relationship of addition to subtraction is explored with books and with connecting cubes.

Illuminations: Repeating and Growing Patterns
Illuminations (National Council of Teachers of Mathematics)

In this activity, students create and explore more complex patterns such as “growing patterns” which have related but different relationships to “repeating patterns”.

Illuminations: Different Representations
Illuminations (National Council of Teachers of Mathematics)

In this activity, students create patterns using connecting cubes and describe various patterns they find in different sequences of cubes.