Last week, the teachers gave us a challenge. Our success criteria was to sort our collections using pairs and groups of ten. We worked with a partner to test different ways that we might achieve this.
We worked out that if we sort our collection into pairs and in rows of 10, our counting is much more efficient! It took us 20 seconds to count our collection by 2's... It only took us 6 seconds to count our collections by 10's! We were amazed!