Problem solving

# Problem-solving Investigations - Year 3/4

Hamilton provide weekly Mixed Year 3/4 maths problem-solving investigations. The mixed-age investigations below will be phased out when we phase out our mixed age weekly maths plans.

Mixed-age maths blocks will be coming during Summer Term for September 2019 and will include investigations for every unit. Find out more about the timetable for Hamilton's Y3/4 maths blocks, including investigations.

Supporting documents for set
• Week
• Title
1
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Guess my number

Children use their knowledge of three-digit numbers, four-digit numbers or Roman numerals, rounding, and properties of numbers to work out mystery numbers.

2
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Age guessing trick

Children subtract numbers and use this calculation to guess a friend's age.

3
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Children add sets of three-digit numbers to find patterns in a magic square based on prime numbers.

4
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Perimeter patterns

Children find how many rectangles it is possible to draw with perimeters 2cm, 4cm, 6cm....30cm and look for patterns in the results.

5
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18 times table - wow! (Y3), Target timings (Y4)

18 times table - wow! (Y3): Children use the grid method to work out the 18 times table and look for patterns in the answers. Target timings (Y4): Children add or subtract ones, tenths or hundreths to reach a target number. The use mathematical resoning to choose the best strategies.

6
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Maths detectives

Children use clues to find an amount of money/number with two decimal places.

7
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Reversed tables

Children explore multiples of 3 and 4 to find divisibility patterns.

8
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Tremendous tiles

Children explore creating patterns of tiles with three asymmetrical blocks.  They look for and identify lines of symmetry, creating patterns with at least two lines of reflective symmetry.

9
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Children find non-unit fractions of multiples and look for patterns.

10
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Day I was born

Children calculate the day they were born on, and other birthdays of friends and family. They then investigate corresponding months.

11
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Set square

Use digits 1-9 once only to complete a calculation grid with given answers for each row and column.