Transcript Problem Solving Multiply Two-Digit Numbers Create your own

Implementation
1.
Review the mathematical concept.
2.
Review the problem solving steps.
3.
READ: Children read the part that is asking them to find
something out.
4.
UNDERSTAND: Children explain what they need to find out.
5.
Children identify what information they will need to find it
out.
6.
Remove the coloured rectangle.
7.
Children find the information they need to find it out.
8.
CHOOSE A STRATEGY: Children identify strategies that they
could use to find it out.
9.
USE A STRATEGY: Children use a strategy to find it out.
10. Children record their thinking as they find it out.
11. CHECK: Children reread the part that asked them to find
something out.
12. Children check that they have found it out.
13. Children check they have recorded their solution correctly.
14.
Children follow the problem solving steps to solve the 2nd
level of the problem, with minimal teacher guidance.
15.
Children who solve the 2nd level, follow the problem solving
steps to solve the 3rd level of the problem independently.
16.
Children use the problems as a guide to create their own
problem, either alone or in pairs/small groups.
Children solve their own problem.
Throughout the lesson, children share solution strategies.
At the end of the lesson, children explain how they created their own problems.
17.
Problem Solving
Multiply Two-Digit Numbers
Toni bought 46 jellies for a party.
Jellies cost 45 cents each.
How much did Toni have to pay?
Toni bought 73 jellies for a party.
Jellies cost 56 cents each.
How much did Toni have to pay?
Toni bought 86 jellies for a party.
Jellies cost 68 cents each.
How much did Toni have to pay?
Create your own problem! Now solve it!
Multiplication and Division 24
Problem Solving
Multiply Two-Digit Numbers
29 classes each have 24 children.
How many children altogether?
34 classes each have 29 children.
How many children altogether?
42 classes each have 33 children.
How many children altogether?
Create your own problem! Now solve it!
Multiplication and Division 24
Problem Solving
Algorithms
There are 4 number cards.
Use the number cards to make this algorithm
true:
There are 4 number cards.
Use the number cards to make this algorithm
true:
Create your own problem! Now solve it!
Multiplication Algorithm
Problem Solving
Algorithms
What number
makes this
algorithm true?
What number
makes this
algorithm true?
What number
makes this
algorithm true?
Create your own problem! Now solve it!
Multiplication Algorithm
Problem Solving
Multiply Two-Digit Numbers
Create your own problem! Now solve it!
Multiplication and Division 24
Problem Solving
Multiply Two-Digit Numbers
29 classes each have 24 children and 1 class has 25 children.
How many children altogether?
34 classes each have 27 children and 1 class has 28 children.
How many children altogether?
41 classes each have 36 children and 1 class 31 children.
How many children altogether?
Create your own problem! Now solve it!
Multiplication and Division 24
Problem Solving
Multiply Two-Digit Numbers
There are 4 number cards. 8 4 6 2
Use the number cards to make this number sentence true:
X
= 1288
There are 4 number cards. 9 4 6 1
Use the number cards to make this number sentence true:
X
= 1344
Create your own problem! Now solve it!
Multiplication and Division 24
Problem Solving
Multiply Two-Digit Numbers
A shop has 39 packets of crayons.
There are 25 crayons in each small packet.
There are 32 crayons in each large packet.
The shop has 27 small packets.
How many crayons does the shop have altogether?
A shop has 63 packets of crayons.
There are 52 crayons in each small packet.
There are 17 crayons in each large packet.
The shop has 29 small packets.
How many crayons does the shop have altogether?
Create your own problem! Now solve it!
Multiplication and Division 24