Discussion resources

Students estimate a multiplication problem, share their methods, discuss the rounding method, and then do more estimation problems using rounding.

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

Students estimate an addition problem, share their methods, discuss grouping nice numbers, and then do a problem using this method, then design a question showing how it uses the method.

Students solve different forms of addition equations.

Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false.

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

Students explore the concept of equality by deciding whether addition sentences are true, false or not proper number sentences.

Students attempt to persuade the adults in their families that they should be able to have a dog. They construct an argument by writing replies to the adults' statements.

Students estimate a multiplication problem, share their methods, discuss the front-end method, and then do more problems using front-end.

Students decide which children are estimating and which are not, and explain their reasoning.

In this task students decide which people are estimating and which are not, and explain their reasoning.