This blog post, which is aimed at primary teachers, has some useful tips on how to make effective use of a maths working wall.
Maths Choppity ChopThis game covers a selection of maths questions such as addition, subtraction, multiplication, division, doubling and more. Answer the questions then chop the vegetables but avoid the steel bar and saw.
Virtual NerdVirtual Nerd has over 1500 free maths video lessons.
A Maths Dictionary for KidsThis is a maths dictionary for students which explains over 600 common mathematical terms and maths words in simple language.
Arrow CardsBuild a two or three digit number using the cards. Click the button to see how it is written. This site can help children understand place value. It is suitable for use on an interactive whiteboard.
Paint the SquaresThere are various sized interactive grids up to 120, all of which are configurable. They include a regular 100 square, a negative numbers grid, decimal numbers and puzzles. Ideal for starter or plenary activity.
Robot AdditionRobot Addition is a multiple choice addition game for 5 to 7 year olds. It has three game modes: Addition to 10, Addition to 15 and Addition to 20.
Subtraction to 10This game provides a simple introduction to the concept of subtraction. Each calculation features a subtraction within 10, along with a pictorial representation of the start number.
Number PiecesA great teaching resource which helps children to understand place value. It uses hundreds, tens and ones blocks. It's great for demonstrating decomposition as you can break apart the pieces.
Shape PatternsShape Patterns is a sequencing game where children from 3 to 8 years of age need to complete the pattern of different coloured 2D shapes. Three levels of difficulty.