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Teaching Portfolio
Gillian Rossi
Pre-Service Teacher, Primary Education
St.Francis Xavier University , 1st Year (2019)
Place Value Puzzle
Grade 1
Number Sense and Numeration: Quantity relationship and counting ​
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Problem solving strategies using prior math knowledge and expanding on it
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Reasoning and proving
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Representing simple math ideas using concrete materials
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Communicating math concepts with group members
(Ministry of Education, Ontario Curriculum, 2005)​
This puzzle works best in small groups, at desks or tables. However it can be modify based on different classroom needs. Each small group will receive an envelope with puzzle pieces mixed up all inside. The puzzle pieces in each envelope will be backed onto different coloured construction paper so it is easier to collect the pieces when it is done. Each envelope will have 4 different place value puzzles. Each place value puzzle consists of...
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The written number (26)
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The written form (2 tens 6 ones)
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The expanded form (20 + 6)
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Picture of place value manipulative
In their small groups, the children will work together to match up the puzzle pieces. If they finish early, you can challenge them to order the numbers from least to greatest or vice versa. Some will line up just the numbers, whereas others will move the entire puzzle.
After the groups have completed their puzzle, and have ordered the numbers, ask the children to pu their puzzle pieces in a pile and rotate them to the other groups. For example, the group that had the blue puzzle, will get yellow, etc.
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To conclude, ask each group to bring just the written number of the puzzle they had to the carpet and all together, order the numbers from least to greatest!
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*Encourage children to explain HOW they know one number is bigger than another.
For example, "...because 11 has a one in the tens column, and 26 has a 2 in the tens column, so 11 is smaller because 1 is smaller than 2".
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