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Addition and Subtraction
Objectives
To use and apply adding and subtracting skills in order to solve problems.
Resources
Abacus Workbook 1 | Small toy spider | A selection of toys/items | sticky notes
Vocabulary
ten(s) | multiple(s) of 10 | one(s) | add | subtract
Today's Lesson
Introduction
Before you start the lesson, watch this Recap Video with your student.
Main Activity
Together collect a range of toys and items from around the house to make a play ‘shop’. Use sticky notes to write some price tags together. The items should be priced at any 2-digit number from the 100 square. The price should be in pence so add a ‘p’ after each number. For example, a teddy may cost 34p.
Take it in turns to choose two items each to buy. Write down the number sentence needed to calculate how much money you will need.
For example, select a Teddy at 34p and a Train at 21p.
34p + 21p = ?
They should use any resources that have helped them this step, including the 100 square, Spider and the 0-100 Beaded line. to calculate the answer.
Can your student work-out which coins they should use to pay for their two items?
Continue for a few goes each.
Now tell your student that each item in the shop as been reduced by 10p.
Can they write the new price tags to use in the sale?
Which calculation would they need to write each time?
For example, the Teddy used to be 34p. How much does it cost in the sale?
34p-10p = 24p
Extra Support
You can begin by offering your student the chance to buy one item at a time.
Extra Challenge
You may wish to make some of the items cost more money using pounds instead of pence. This time, use the £ sign before the number on the price tag.
For example: A jumper costs £23
Workbook
To help your student build upon their learning from today, please ask them to complete the activities on page 41 of Abacus Workbook 1.