The Bonds of 20 are a fundamental concept of Foundation Phase maths.
Number bonds provide a mental picture of the relationship between numbers. These mental pictures are the key to enabling children to do mental arithmetic. Knowing addition number bonds means that children will understand subtraction with ease. If they know that 13+4 = 17 they will quickly realise that when they see 17-4 = ?, the answer is 13 because by a process of elimination 13 is the missing number in this number bond. It helps children to see that subtraction is a mirror image of addition.
They begin to see the patterns in numbers and to learn mathematical principles rather than having to memorise each individual sum. Number bonds are the foundation blocks your child needs to progress with maths. Once they know all of the number bonds for 1-20, they will have the information they need to subtract using the numbers 1-20
The best way to teach number bonds is to use games. Number Cruncher Addition Bones are an excellent resource for practicing these early maths skills. Knowledge of number bonds is essential when it comes to harder calculations involving addition and subtraction
For example: In Number Crunchers to 20 Bones may have the Maths Sentence 9 + 4 = 13 The slider can be moved to conceal any part of this maths sentence.
The Number Cruncher Addition Bones are 214mm x 60mm in dimension, and come in a pack of 45
The Bones are screen printed onto the high quality yellow plastic. Research shows that black printed onto yellow materials optimises visual clarity
Product Code: 3101008