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Mathematics
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Subtraction Working Charts
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Regular Price:
USD
39.00
Availability::
In Stock
Product Code:
M.120.4
Qty:
Description
How to Use
The set consists of a control chart, two working charts and a box of wooden answer chips.
The Subtraction Working Charts aid the child in practice and memorization of the subtraction combinations.
The charts measuring 45 cm x 27 cm and 61 cm x 23 cm
The tiles measure 2 cm square and are used to fill in the subtraction tables on the charts
The charts feature a durable hardwood frame to protect their edges from wear.
Related products (Click them to view details):
Age
3-6
Materials
Subtraction Chart A, a chart giving positive results only for numbers 1 to 18, taking away numbers 1 to 9.
Slips on which are written all the subtraction combinations of 1 to 18.
Preparation
Presentation
Directress shows the child how to use the Chart A.
She takes out a slip, e.g. 9-3. First, find 9 on the top of the chart, and then find -3 on the right hand side.
Place two fingers on the two numbers and move the fingers, sliding down and along until they meet 6.
Record the answer.
The child continues in this manner for all the slips.
Control Of Error
The structure of the chart provides the child with the correct answer.
Points Of Interest
Purpose
To help the child learn and remember the subtraction tables up to 18.
More
Subtraction Chart B
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