I’ve been working with my firsties on composing and decomposing the numbers 3, 4, and 5. Last week, I used number bond cards and manipulatives–linking cubes and ten-frames–to introduce the idea of number bonds. Read more about that here. Over the weekend, I finished up a set of cards showing pictorial representations for numbers bonds, and this week we’re using those cards to further develop the idea of the relationships between the numbers in number bonds. I wanted to give you an idea of how I plan to develop the concept throughout the week.