Illuminations: Shorts and Shirts
Illuminations (National Council of Teachers of Mathematics)

Students are encouraged to discover all of the possible combinations for outfits consisting of shirts and shorts. Students apply problem-solving skills (including elimination and collection of organized data) to draw their conclusions.

Illuminations: Ice Cream Cones
Illuminations (National Council of Teachers of Mathematics)

Students are encouraged to discover all the combinations for ice cream cones.

Illuminations: Clowning Around
Illuminations (National Council of Teachers of Mathematics)

In this lesson, students are encouraged to discover all of the combinations for a given situation.