This Math lesson is designed for 3 to 6-year-old children. It introduces the child to the algebraic formulas and helps them learn the different mathematical concepts using a trinomial cube.
What is a trinomial cube?
The trinomial cubes are color-coded 3D blocks that represent the algebraic trinomial formula. The cube is made up of 27 wooden blocks of different sizes. These blocks fit together to form a cube and represent the cube (a + b + c).
It is similar to the Binomial Cube lesson where the child assembles the cube by putting together blocks to form the cube printed on the lid.
A Trinomial cube box consists of
- Three wooden cubes: red, blue, and yellow
- Eighteen rectangular prisms
- 3 red and black prism with the same height as the blue cube
- 3 red and black prism with the same height as the yellow cube
- 3 yellow and black prism with the same height as the red cube
- 3 yellow and black prism with the same height as the blue cube
- Blue and black prism with the same height as the yellow cube
- 3 blue and black prism with the same height as the red cub
- 3 Six black rectangular prism
All the pieces when assembled form a cube of (a+b+c). The cube of the trinomial is printed on the lid
Benefits of using Trinomial cube
- To prepare the child to learn advanced mathematical concepts.
- To refine dexterity and visual acuity.
- To provide concrete and visual exposure to the algebraic concepts.
- To provide a conceptual understanding of numbers and formulas.
- It helps in developing fine motor skills, order, concentration, and hand-eye coordination.
How to introduce a Trinomial Cube to a child?
- Invite the child to the table and tell them, today we are going to learn what a trinomial cube is and how to find the cube of a trinomial.
- Remove the lid of the trinomial cube box and place it on the table facing up.
- Open one side of the box and gently remove all the blocks from the box one at a time.
- Sort the blocks by color order. Make sure to leave space so that all the colors are visible.
- Tell the child to build the cube using the box’s lid
- Begin with the red block and place it on the red color block on the box’s lid
- Find a matching color prism and place it in the correct spot.
- Repeat placing the color cubes one by one. (Note: The top pattern should match the lid of the box).
- Place a hand on the first level to show the child it’s flat.
- Now, tell the child to move this layer into the box.
- Once the first level is placed in the box, begin the second level and third level on top, using the box’s lid as a reference.
- Again, when the second layer is complete, ask the child to move it into the box.
- Similarly, when the third layer is complete, ask the child to move it into the box.
- Close the sides of the box and close the lid.
- Ask the child to repeat the activity.
Invite the child to arrange the blocks together to form the cube of a trinomial as shown in the video and help them develop a strong foundation of math and logical concepts.
For more math resources, visit: https://theglobalmontessorinetwork.org/math-resources/
Video Created by: Joanne Shango