![Mini-Sudoku](/sites/default/files/styles/medium/public/thumbnails/content-id-10156-icon.png?itok=2n30eMa1)
Working systematically
![Mini-Sudoku](/sites/default/files/styles/medium/public/thumbnails/content-id-10156-icon.png?itok=2n30eMa1)
![Adjacent Additions](/sites/default/files/styles/medium/public/thumbnails/content-id-10151-icon.png?itok=WEdIL03d)
problem
Adjacent Additions
In a 7-digit numerical code, each group of four consecutive digits adds to 16, and each group of five consecutive digits adds to 19. What is the sum of all 7 digits?
![Relative Time](/sites/default/files/styles/medium/public/thumbnails/relative-time.png?itok=0Rw0Lk54)
problem
Relative Time
Albert Einstein is experimenting with two unusual clocks. At what time do they next agree?
![Dice in a Corner](/sites/default/files/styles/medium/public/thumbnails/content-id-8586-icon.png?itok=afailiuC)
problem
Dice in a Corner
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
![Polydron](/sites/default/files/styles/medium/public/thumbnails/content-03-01-cupboardlove4-icon.gif?itok=QjGvoewT)
problem
Polydron
This activity investigates how you might make squares and pentominoes from Polydron.
![Ordered Ways of Working Upper Primary](/sites/default/files/styles/medium/public/thumbnails/content-id-9799-icon.jpg?itok=rjaodtx2)
list
Ordered Ways of Working Upper Primary
These activities lend themselves to systematic working in the sense that it helps if you have an ordered approach.
![Finding all possibilities Upper Primary](/sites/default/files/styles/medium/public/thumbnails/content-id-9795-icon.jpg?itok=AbHgwPGw)
list
Finding all possibilities Upper Primary
These activities focus on finding all possible solutions so if you work in a systematic way, you won't leave any out.
![Ordered Ways of Working Lower Primary](/sites/default/files/styles/medium/public/thumbnails/content-id-9796-icon.jpg?itok=wr2Nm7R3)
list
Ordered Ways of Working Lower Primary
These activities lend themselves to systematic working in the sense that it helps if you have an ordered approach.
![Finding all possibilities Lower Primary](/sites/default/files/styles/medium/public/thumbnails/content-id-9793-icon.jpg?itok=9wC0pQXZ)
list
Finding all possibilities Lower Primary
These activities focus on finding all possible solutions so if you work in a systematic way, you won't leave any out.