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Multilink cubes are small, colorful, interlocking cubes that are often used in elementary mathematics education to help children visualize and understand basic concepts, such as number bonds. In this description, a teacher uses multilink cubes to teach a class of young students how to form number bonds up to 10, which are pairs of numbers that add up to 10.

The teacher begins by distributing sets of multilink cubes to each student. Each set includes a variety of colors, and the students are instructed to use these cubes to explore different combinations that sum up to 10. The teacher walks around the classroom, helping students snap the cubes together. For example, one student might connect three red cubes to seven blue cubes, illustrating the number bond of 3 + 7 = 10.

The teacher encourages the students to try all possible combinations. They might make a chain of five orange cubes and five green cubes, or two yellow cubes with eight purple cubes. As the students work, the teacher asks them to lay out their number bonds in a line on their desks, creating a visual representation of each equation.

To deepen the understanding, the teacher sets up a large chart on the whiteboard, where each pair of students comes up and adds their number bond to the chart. They use additional multilink cubes to build the number bond on the board, allowing the entire class to see the various combinations.

Throughout the activity, the teacher emphasizes the importance of exploring different combinations and swapping colors, so students understand that the numerical value remains constant despite the change in color or order of the cubes. This hands-on approach not only makes the math lesson more engaging but also allows students to physically manipulate and explore the mathematical concepts, reinforcing their understanding of number bonds up to 10.