The Otterclue tree
Every topic your child meets in P1-P4 grows on this tree. A fruit means there is a case to practise it: tap it to play.
- Numbers
- Measurement
- Geometry
- Data
P4
- Numbers up to 100 000Case growing
- Factors and MultiplesCase growing
- Four OperationsCase growing
- Mixed Numbers and Improper FractionsCase growing
- Fraction of a SetThe Case of the Fair Shares
- Addition and SubtractionCase growing
- Decimals up to 3 decimal placesCase growing
- Addition and SubtractionCase growing
- Multiplication and DivisionCase growing
- Area and PerimeterCase growing
- AnglesCase growing
- Rectangle and SquareCase growing
- Line SymmetryCase growing
- NetsCase growing
- Tables, Line Graphs and Pie ChartsCase growing
P3
- Numbers up to 10 000Case growing
- Addition and SubtractionCase growing
- Multiplication and DivisionThe Case of the Missing Remainders
- Equivalent FractionsCase growing
- Addition and SubtractionCase growing
- MoneyCase growing
- Length, Mass and VolumeCase growing
- Area and PerimeterCase growing
- AnglesCase growing
- Perpendicular and Parallel LinesCase growing
- Bar GraphsCase growing
P2
- Numbers up to 1000Case growing
- Addition and SubtractionCase growing
- Multiplication and DivisionThe Case of the Missing Remainders
- Fraction of a WholeThe Case of the Fair Shares
- Addition and SubtractionCase growing
- MoneyCase growing
- Length, Mass and VolumeCase growing
- 2D ShapesCase growing
- 3D ShapesCase growing
- Picture Graphs with ScalesCase growing
P1
- Numbers up to 100Case growing
- Addition and SubtractionCase growing
- Multiplication and DivisionThe Case of the Missing Remainders
- MoneyCase growing
- LengthCase growing
- 2D ShapesCase growing
- Picture GraphsCase growing
★ Special Cases
Hidden in the roots: spatial thinking beyond the school syllabus.
- Seeing cube towers from the top, front and sideThe Case of the Block Tower Code
- Fewest cubes for a blueprintCase growing
- Back and left views, fewest and most cubesCase growing
Based on the MOE 2021 Primary Mathematics Syllabus (updated October 2025).