Estimation resources

In this practical task, students work in pairs to estimate how much time they think has passed. One student estimates while the other times.

Students show how they estimate in some multiplication problems and come up with sensible estimates.

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

This practical task involves students making best estimates of sets of items and clearly demonstrating their method(s) of estimation.

Students explain multiplication estimation methods used to solve word problems.

Students to show how they estimate in some addition problems.

This task requires students to estimate some addition problems using any appropriate method.

This practical task involves students making estimates of sets of items and demonstrating their method(s) of estimation.

Students estimate a division problem, share their methods, discuss the nice numbers and factors method, and then do more problems using nice numbers and factors.

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

Students discuss making an interval estimate in multiplication problems (i.e., getting a lower and an upper limit for the actual answer using the front-end and rounding-up estimation methods). They then use this method on two problems.

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

Students use a given height and diagram to estimate the height of four pictures of toy dolls.

Students use a given distance and diagram to estimate the distance four people swam underwater.

In this practical task, students estimate the capacity of two different sized containers, then check their estimates with a measuring jug.

In this practical task, students estimate the length of two common classroom objects, then check their estimates with a ruler.

In this practical task, students estimate, and then measure, the weight of two objects using a number of multi-link cubes, a balance scale and weights.

In this practical task, students estimate, then measure, the weight of two bags using kitchen scales.

In this practical task, students estimate, then measure, the length of two objects using a ruler.

In this practical task, students estimate and then measure temperatures.

In this practical task, students first estimate, then measure, how many 500ml jars it takes to fill a 1 litre and a 3 litre container

This practical task requires students to construct a one metre newspaper roll, use it to estimate the dimensions of a room, then calculate the volume of that room.

In this practical task students use a grid squares overlay to estimate the area of six shapes by counting the number of squares each shape covers.

Students write down an explanation of how the front-end estimation strategy works in addition problems to give information on their understanding of the strategy.