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

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

In this practical task, students estimate, then measure, the volume of two containers using a measuring jug.

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 weight of two different sized bags, then check their estimates using kitchen scales.

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

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

Students read scales from a car speedometer.

Students use a scale map to estimate the area of Antarctica and explain their method.

Students estimate the temperature and indicate it on a thermometer.

Students identify the measure of temperature off linear scales.

Students calculate the shortest distance between two points on a grid map by using a scale.

Students read from, and mark points on, non-linear scales.

Students explain errors in calculations that include all operations, decimal values, and percentages.

Students use a protractor to find given angles and draw angles of given degrees.

Students show how they would carry out estimation of multiplication tasks.

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

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

Students to show how they estimate in some addition problems.

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.

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

Students explain multiplication estimation methods used to solve word problems.

This task requires students to show how to estimate numbers of items in some multiplication problems using any acceptable estimation strategy.

Students use rounding to estimate totals then discuss this as a method of estimation.

Students calculate an exact square root and estimate approximate square roots by finding the length of the square flower bed of a given area, and give an explanation for their answers.