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Students solve algebraic problems about the cost of oranges and lemons and how many of each fruit is purchased for a given cost.

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

In this activity students progressively build up evidence for and against a new idea in pest control: using bumblebees to transmit a fungicide. Students practise argumentation skills and reflect on how they formulate opinions on environmental issues.

Different selections are made from a canteen menu that will cost a given amount. An extension activity is given that asks for all possible combinations to be found.

Students use addition and subtraction to calculate the changing balance in a students back account.

Students use a number line to show how to solve whole number 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 explain why a range of students' answers to a maths problem are incorrect.

This comprehension task involves progressively disclosing a poem to students. It assesses their ability to use evidence from the poem to work out what it could be describing. SJ-3-1-2004. Text provided.

Students solve addition story problems involving numbers of different magnitude to explore their place value understanding.

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

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 identify the most likely sequence of tosses of a fair coin and explain their reasons.

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

Students place decimal numbers in the correct order and position on a number line.

From three different sized animal pictures and their enlargements, students are required to identify the scale factor and the length of an unknown side.

Students answer two multiple-choice questions about star movement during an evening and star colour and temperature.

Students answer two multiple-choice questions about lightning and determine how far away a thunderstorm is by doing a calculation.

Students use plastic money to explore and continue a number pattern about going to a disco. They then describe the pattern.

Students use coloured beads to explore and continue a spatial pattern. They then describe the pattern.

Students identify lowest and highest values from 2- and 3-digit whole numbers.

Students sort shapes using two attributes, and recognise where the attributes overlap.

Students complete equations that give the rule for the general term for a number of spatial patterns.

Students interpret a line graph to answer 4 multiple choice questions about a car along a racing track.

Students answer a multiple choice question about what happens when a magnetised object is cut in half, and then draw the lines of the magnetic field around two magnets.