Illuminations: Seeing Doubles
Illuminations (National Council of Teachers of Mathematics)

In this lesson, the students focus on dominoes with the same number of spots on each side and on the related addition facts.

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: Sum Search
Illuminations (National Council of Teachers of Mathematics)

During this lesson, students practice addition facts (with sums of 5, 6, 7, and 8) in a concentration-game format using dominoes.