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Student solve addition problems where the missing value is located in different positions. This may mean that students transform the problem into a subtraction one. Students reflect on the easiest and hardest problems, and explain their choice.

Students show how to solve a series of algebraic expressions by substituting given numbers.

Students estimate a subtraction problem, share their methods, discuss the rounding one number method, and then do more problems by rounding one number.

Students use a number line to show how to solve whole number subtraction problems.

Students show where different fractions are positioned on a number line.

Students identify the shaded fraction of a number of different shapes.

Students identify shapes that have been shaded two-thirds and name the fraction that the other shapes have been shaded.

Students use a number line to show how to solve whole number addition and subtraction problems.

Students identify whether algebraic equations are always, sometimes, or never true, and explain their reasoning.

Students estimate an addition problem, share their methods, discuss the rounding method, and then do more problems using rounding.

Students describe a functional rule for two spatial patterns.

Students compare two fractions, find the larger fraction and show or explain their reasoning.

Students use a number line to show how to solve whole number addition and subtraction problems.

Students use sticks to continue given patterns, and identify the number of sticks needed to make the new shapes in the pattern

Students answer questions involving adding and subtracting fractions of cake.