Concept:Cuisenaire strips are colour-coded, length-based manipulatives that come with the O.B.B. Maths kit. They let students visually build and explore multiplication as repeated addition or area, making the operation concrete and easy to understand.
Explanation:- Cuisenaire strips allow children to represent multiplication facts by placing strips end-to-end or side by side. For example, to show
3×4, a child can place three ‘four-length’ strips together, counting the total length as 12. This hands-on approach clarifies the idea of repeated addition.
- The other tools serve different primary purposes: the abacus is for place value and mental calculation; cubic rods (like Cuisenaire rods) are more general for counting and operations but not as specifically named in the O.B.B. Maths kit; Napier strips (also called Napier’s bones) are a historical multiplication aid based on lattice multiplication, but they are not included in the O.B.B. kit as a standard item for easy manipulation.
- In the O.B.B. Maths kit, Cuisenaire strips are the material explicitly designed to make multiplication (and other operations) visually easy for young learners.
Answer:Option A: Cusenaire strips (Cuisenaire strips).