Updated: Oct 10, 2020
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Double sided counters are nothing new to mathematics classrooms. These small plastic discs are versatile and can be used across the curriculum to unlock and deepen mathematical concepts. Here's how:
Double sided dexterous delights can represent and expose the structure of numbers from Early Years to Key Stage 3 and beyond. Using them with a place value grid allows focus on the value of each digit, understanding of the authority of the the position of digits in numbers and reading of numbers.
One of the most simple ways can be using 5 frames and 10 frames. Children may show number bonds to 5 and 10 to show the depth of their understanding in key stage 1.
In key stage two, where keeping 5 and 10 frames may still be effective, counters may represent different values (such as one counter representing 5 or 10 etc). They may also be used to represent decimals, fractions and percentages. For this reason, they have strong relationships and effective links with addition and subtraction.
Using them to introduce the concept of more than and less than can be a powerful way to introduce the concepts.
A number square and one double sided counter to obscure a number can be a powerful activity to develop reasoning and fluency around number. Finding one more, one less, ten more and/or ten less may be a good starting point for Key Stage one. Changing the language and questioning used can deepen the task for children at Key Stage two. Find the number that is ten more than ten more than 41, for example.
Introducing and strengthening understanding of inequality can be also achieved with double sided counters and lollipop sticks.