Subtraction Strip Board (presentation two)

How the second presentation with the Subtraction Strip Board is presented

This activity teaches the child how to do subtraction with the Subtraction Strip Board and the Subtraction Series one sum car. For the second presentation with the Subtraction Strip Board we use the blue and the wooden strips.

The directress begins by asking the child to build the blue stair on the left-hand side of the board, while she builds the wooden strips at the top of the board. The directress asks the child to read the first sum on the card (5-3=). She covers the numbers from 6-18 with the wooden strips. She takes the number 3-blue strip from the blue stair and covers the strips on the board. She then counts the strips to the left of the blue-covered strips and notices how many were not covered. The answer is (2), as two of the strips were not covered.

The directress does the next operations in the same manner and then allows the child to have a turn. She then shows the child how to check the answers on the back of the card, once all of the sums have been completed.

The directress works through the Series 2 and 3 sum cards in the same manner.

Looking for more Montessori activities?

Here is a list of all the Montessori Maths activities including Early Maths, Introduction to the Decimal System, Seguin Boards, The Hundred Board, The Short Bead Stair, Bead Chains, The Snake Game, Group Operations, The Large Number Rods, Recording with the Small Number Rods, The Short Bead Stair, The Strip Boards, The Boards, The Stamp Game, The Abacus, The Dot Game, and Fractions. Just click on the page you want to learn about to go there.

Early Maths

Introduction to the Decimal System

The Short Bead Stair

The Short Bead Stair: orientation exercise

Seguin Boards

The Hundred Board

The Hundred Board

Bead Chains

The Snake Game

Group Operations

Large Number Rods

Recording with the Small Number Rods

Recording with the Small Number Rods