1. Implementation
Review the mathematical concept.
Review the problem solving steps.
READ: Children read the part that is asking them to find something out.
UNDERSTAND: Children explain what they need to find out.
Children identify what information they will need to find it out.
Remove the coloured rectangle.
Children find the information they need to find it out.
CHOOSE A STRATEGY: Children identify strategies that they could use to find it out.
USE A STRATEGY: Children use a strategy to find it out.
Children record their thinking as they find it out.
CHECK: Children reread the part that asked them to find something out.
Children check that they have found it out.
Children check they have recorded their solution correctly.
Children follow the problem solving steps to solve the 2nd level of the problem, with minimal teacher guidance.
Children who solve the 2nd level, follow the problem solving steps to solve the 3rd level of the problem independently.
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.

2. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
Fred had a packet of 100 lollies.
Lenny had 10 packets of 10 lollies.
Gina had 100 individual lollies.
Did they have the same number of lollies?
Fred had a packet of 100 marbles.
Lenny had 10 packets of 10 marbles.
Gina had 100 individual marbles.
Did they have the same number of marbles?
Fred had a packet of 100 berries.
Lenny had 10 packets of 10 berries.
Gina had 100 individual berries.
Did they have the same number of berries?
Place Value 15
Create your own problem! Now solve it!

3. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
Jon collected 15 bags of 10 marbles.
How many more marbles does he need to have 156 marbles?
How do you know?
Jon collected 28 bags of 10 marbles.
How many more marbles does he need to have 284 marbles?
How do you know?
Jon collected 47 bags of 10 marbles.
How many more marbles does he need to have 471 marbles?
How do you know?
Place Value 15
Create your own problem! Now solve it!

4. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
Jon collected 62 bags of 10 marbles.
How many more marbles does he need to have 636 marbles?
How do you know?
Jon collected 27 bags of 10 marbles.
How many more marbles does he need to have 294 marbles?
How do you know?
Jon collected 82 bags of 10 marbles.
How many more marbles does he need to have 856 marbles?
How do you know?
Place Value 15
Create your own problem! Now solve it!

5. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
Jan partitioned 324 blocks into parts.
What might the parts look like?
Jan partitioned 472 blocks into parts.
What might the parts look like?
Jan partitioned 395 blocks into parts.
What might the parts look like?
Place Value 15
Create your own problem! Now solve it!

6. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
A sugar cane train has 214 carriages.
The train driver partitions the train into 2 parts.
How many carriages could be in each part?
A sugar cane train has 285 carriages.
The train driver partitions the train into 2 parts.
How many carriages could be in each part?
A sugar cane train has 329 carriages.
The train driver partitions the train into 2 parts.
How many carriages could be in each part?
Place Value 15
Create your own problem! Now solve it!

7. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
There are 324 fruit bats in these two trees.
How many fruit bats might be in each tree?
There are 379 fruit bats in these two trees.
How many fruit bats might be in each tree?
There are 527 fruit bats in these two trees.
How many fruit bats might be in each tree?
Place Value 15
Create your own problem! Now solve it!

8. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
There are three apple trees, with 325 apples altogether.
How many apples might be in each tree?
There are three apple trees, with 429 apples altogether.
How many apples might be in each tree?
There are three apple trees, with 467 apples altogether.
How many apples might be in each tree?
Place Value 15
Create your own problem! Now solve it!

9. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
I have 324 marbles in three bags.
How many marbles might be in each bag?
I have 427 marbles in three bags.
How many marbles might be in each bag?
I have 523 marbles in three bags.
How many marbles might be in each bag?
Place Value 15
Create your own problem! Now solve it!

10. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
What number could be in the blank space on this number line?
What number could be in the blank space on this number line?
What number could be in the blank space on this number line?
Place Value 15
Create your own problem! Now solve it!

11. Place Value of Three-digit Numbers
Problem Solving
Place Value of Three-digit Numbers
Where would 43 go on this number line?
Where would 362 go on this number line?
Where would 801 go on this number line?
Place Value 15
Create your own problem! Now solve it!

12. Place Value of Three-Digit Numbers
Problem Solving
Place Value of Three-Digit Numbers
Place Value 15

13. Place Value of Three-Digit Numbers
Problem Solving
Place Value of Three-Digit Numbers
What number is covered on the
hundred chart?
How do you know?
Hint: Change the number with the counter on, and allow children to solve again!
Place Value 15
Create your own problem! Now solve it!