How do classroom behavioral expectations support the development of students’ mathematical reasoning? A sixth-grade teacher and his students developed this example while discussing a ratio comparison problem.

Grades: 3rd to 5th, Pre K to 2nd, 6th to 8th, PreK to 2nd

Num & Ops Fractions

Geometry

Ratio & Proportion

Use equivalent fractions as a strategy to add and subtract fractions.

Reason with shapes and their attributes.

Understand ratio concepts and use ratio reasoning to solve problems.

6.RP.A.1, 6.RP.A.2, 6.RP.A.3a, 6.RP.A.3b, 1.G.A.3, 2.G.A.3, 3.G.A.2, 5.NF.A.2