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

In this lesson, the relationship of subtraction to addition is introduced with a book and with dominoes.

Illuminations: Combining Foods
Illuminations (National Council of Teachers of Mathematics)

In this lesson, students explore addition and comparison subtraction by modeling and recording related addition and subtraction facts for a given number.

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

In this lesson, students explore the relation of addition to subtraction with books and links.

Illuminations: Practice Makes Perfect
Illuminations (National Council of Teachers of Mathematics)

During this lesson, students use what they know about fact families to play a concentration game.