Two-Coloured Counters Yellow & Blue – 1000pc

Two-coloured counters feature one yellow side and one blue side on the reverse. Use them for addition, subtraction and many more activities. The set comes in a container of 1000pc. Size: 2.5cm in diameter. Some activity ideas for bi-coloured counters: – Use the two colours of the counters to practise with positive and negative numbers. For instance: positive is yellow and negative is blue. -2 + 3 would mean that you have 2 yellow and 3 blue counters. A single positive and a single negative counter represents a sum of 0, and can therefore be ‘cancelled out’. What is left is one blue counter – students can now visualise that the answer to the equation is +1. – Use the counters to practise with fractions: place 12 counters in 3 groups of 4, all with the yellow side up. What is the fractional portion of each of the groups of counters? Flip one counter in one group (you will now have 11 yellow and 1 blue counter). What is the fractional portion of the blue counter within its group? And within the complete group of counters? Keep flipping counters to change the fractional portion. – Flip a counter 50 times and tally how many times it lands on blue and how many times it lands on yellow. You should find that it is almost even between yellow and blue. Now flip 2 counters and count how many times you have 2 yellow, 2 blue or one yellow and one blue counter. Do you see a pattern? Repeat with more counters, and predict the answer before you start. – Randomly place the counters on a table and let students guess if there are more yellow or more blue counters visible. Sort the counters by colour and count the counters to check the answer.