2. wiggle wiggle
10 is 1 ten
10 is 10 ones
Place Value 7

3. Reflection: How can you see 10 as 1 ten and 10 ones?
Investigation:
Sit with a friend.
Collect 10 connecting blocks.
Join the 10 blocks to make a tower.
How many tens do you see?
Break the tower into 10 blocks.
How many ones can you see?
Reflection: How can you see 10 as 1 ten and 10 ones?
Problem Solving
Fred had this packet of lollies.
Gina had these individual lollies.
Did they have the same number of lollies?
Place Value 7

4. Place Value 7

5. Place Value 7

6. Place Value 7

7. Reflection: How can you see 10 as 1 ten and 10 ones?
Investigation:
Problem Solving
Millie and Rose were showing 18 fingers. Millie was showing 10 fingers.
How many fingers was Rose showing?
Sit with a friend.
One of you show 10 fingers.
Your friend shows a ones number of fingers.
How many fingers altogether?
How many tens?
How many ones?
Record a place value chart.
Record your teen number in the place value chart.
Describe your teen number as 1 ten and some ones.
Reflection: How can you see 10 as 1 ten and 10 ones?
Problem Solving
Millie and Rose made a teen number with their fingers.
Millie was showing 10 fingers and Rose was showing 6 fingers.
How many fingers altogether?
Place Value 7

8. fourteen
4 and 10
Place Value 7

9. Reflection: What does teen mean?
Investigation:
Sit with a friend.
Record a teen number as a word.
What does teen mean?
Look at the rest of the word. Does it say the number of ones?
Does fifteen almost say five-teen?
Does thirteen almost say three-teen?
Reflection: What does teen mean?
Problem Solving
Jon collected four marbles.
How many more marbles does he need to have fourteen marbles? How do you know?
Place Value 7

10. 1 4
Place Value 7

11. Reflection: What is a digit?
Investigation:
Sit with a friend.
Record a teen number.
Name the number a number.
Name the numbers that join together to make the number, digits.
How many digits do teen numbers have?
Reflection: What is a digit?
Problem Solving
Gina recorded a teen number with 2 digits. One of the digits was 7.
What was the other digit?
Place Value 7

12. Place Value 7

13. Place Value 7

14. Place Value 7

15. Investigation: Problem Solving Sit with a friend.
Select a teen number of counters.
Place them on to two 10 frames.
Record the 10 frames.
Record the number in the 10 frame on the left.
Record the number in the 10 frame on the right.
Record a place value chart and record your ten in the tens column, and the ones in the ones column.
Describe your number as 1 ten and some ones.
Reflection: What does a place value chart tell us about the value of each digit in a teen number?
Problem Solving
Matt found these shells at the beach.
How many shells does Matt have? How do you know?
Place Value 7

16. Place Value 7

17. Place Value 7

18. Place Value 7

19. Reflection: How can we describe teen numbers using place value?
Investigation:
Sit with a friend.
Select cards to make a teen number.
Collect the corresponding number of blocks.
Group the blocks into place values of tens and ones, by joining 10 together to make a tower, and leaving the remaining blocks single.
Record a place value chart.
Record your ten in the tens column, and the ones in the ones column.
Describe your number as 1 ten and some ones.
Reflection: How can we describe teen numbers using place value?
Problem Solving
Fred had this packet of lollies.
Gina had these individual lollies.
How many lollies altogether?
Place Value 7

20. Place Value 7

21. Reflection: How can we add some ones to 1 ten to make a teen number?
More Investigations:
Sit with a friend.
Enter the number 10 on a calculator.
Add a single-digit number.
Predict what number the result will be.
Describe the teen number as ’1 ten and … ones’.
Press ‘=’ and compare the answer.
Reflection: How can we add some ones to 1 ten to make a teen number?
Place Value 7

22. Enter a teen number on a calculator.
More Investigations:
Sit with a friend.
Enter a teen number on a calculator.
Describe the teen number as ’1 ten and … ones’.
Subtract a single-digit number to make the calculator show 10.
Explain how you knew what number to subtract.
Reflection: How can we subtract some ones from a teen number to make 10?
Place Value 7

23. Each of you make a teen number using playing cards.
More Investigations:
Sit with a friend.
Each of you make a teen number using playing cards.
Which number is higher?
Which number is lower?
How many tens and ones in the lower number?
How many tens and ones in the higher number?
Reflection: How can we tell which teen number higher by looking at tens and ones?
Place Value 7