Trinomial Cube bead-stairs The first working chart later

The first working chart later becomes the control chart for the child to correct their work with the blind chart

This set consists of a wooden block with five differently sized threaded nuts affixed inside

Square dimensions: 8

as seen in the second photo:

Trinomial Cube bead-stairs The first working chart later27 painted wooden prisms in a wooden box with a lid. The box is hinged and opens out to display the cubes. The lid and sides of the box are printed with the trinomial square pattern. The purpose of this product is to provide the child with tangible experience of the way in which the cube can be divided and subdivided. It also lays the foundations for the later study of algebra. Features Cube dimensions: 9 cm x 9 cm x 9 cm. Box dimensions: 11. 3 cm x