We have a challenge a day for you throughout the summer break...
Each weekday from 19 July to 31 August, a new game or puzzle will appear on this page.
After you've had a go at the day's challenge you may be able to compare your approach to the solutions we have published, which are based on students' work.
You can also find Primary Games and Puzzles for Summer 2021.
Nine colours
Frogs
Amazing card trick
Magic potting sheds
Ace, two, three...
In the bag
Nice or nasty
Finding factors
Escape from the castle
Add to 200
Gabriel's problem
Alison's quilt
Missing multipliers
Factors and multiples game
A game in which players take it in turns to choose a number. Can you block your opponent?
Got it
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
The remainders game
Play this game and see if you can figure out the computer's chosen number.
Diamond collector
Collect as many diamonds as you can by drawing three straight lines.
Charlie's delightful machine
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
Connect three
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
Product Sudoku
The clues for this Sudoku are the product of the numbers in adjacent squares.
Multiples Sudoku
Each clue in this Sudoku is the product of the two numbers in adjacent cells.
LCM Sudoku
Here is a Sudoku with a difference! Use information about lowest common multiples to help you solve it.
A first product Sudoku
Given the products of adjacent cells, can you complete this Sudoku?
Difference Sudoku
Use the differences to find the solution to this Sudoku.
The Number Jumbler
The Number Jumbler can always work out your chosen symbol. Can you work out how?
Treasure hunt
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
Fruity totals
In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?
Square it
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.
