LESSON 17 SYNOPSIS (13 April – 19 April 2026)

11 April 2026

At Matrix Math, we provide an engaging and detailed learning experience for your child. Matrix Math Tuition programme focuses on essential concepts that will further strengthen their mathematical foundation. The lesson synopsis gives parents a clear preview of the topics and problem-solving skills that will be covered in class. At Matrix Math, we ensure that each lesson is designed to build confidence and mastery in math, preparing students for success in both school and beyond.

Primary 1 Lesson 17

This lesson builds foundation in Numbers to 20 L5, training P1 students to interpret and solve comparison word problems involving more than and fewer than within numbers to 20. Problems progress from fill-in statements to structured word problems requiring students to identify what is being found before calculating.

Learn to distinguish more than and fewer than as relational language between two quantities
Apply a comparison framework to identify the bigger group, smaller group, and difference before solving
Practise finding any unknown — bigger group, smaller group, or difference — from the same problem structure
Strengthen careful reading of comparison language to determine the correct operation
Consolidate reasoning across all three question types within varied word problem contexts

Students will interpret comparison problems fluently, building the analytical foundations needed for bar model thinking in later primary levels.

Primary 2 Lesson 17

This lesson builds foundation in Mass 3, training P2 students to solve multi-step mass problems across three structured problem types — part-whole, total, and comparison.

Learn to apply part-whole reasoning across two simultaneous totals to isolate an unknown mass
Practise a two-step process: identify the shared quantity first, then derive the remaining unknown
Apply repeated addition to find the combined mass of multiple identical items before totalling across groups
Strengthen sequential reasoning by deriving each mass in order before summing to a final total
Consolidate comparison reasoning across three quantities linked by heavier and lighter relationships

Students will handle chained multi-step mass problems fluently, building the structured thinking needed for PSLE-level problem solving.

Primary 3 Lesson 17

This lesson builds foundation in Money 7, training P3 students to solve before-and-after money transfer problems across three structured problem types.

Learn to recognise internal transfer: when money moves between two people, the combined total stays unchanged
Apply unitary method to work from the post-transfer ratio back to each person’s original amount
Practise equal-start reasoning: the amount transferred is always half the desired final difference
Strengthen reasoning about how a transfer reduces the difference between two quantities by twice the transferred amount
Consolidate all three transfer structures — unchanged total, equal start, and shifting difference — across varied money contexts

Students will analyse transfer problems fluently, building the structured reasoning needed for PSLE-level money questions.

Primary 4 Lesson 17

This lesson builds foundation in Fractions 4, training P4 students to apply fractions sequentially to a whole and its remainder across four structured problem types.

Learn to apply fraction of a remainder: take one fraction of the whole, then apply a second fraction to what remains
Strengthen scaling to align remainder units with the original whole before solving backwards to find the total
Practise redrawing the remainder bar when the second fraction uses a different denominator, requiring a new unit scale
Apply fraction of a quantity to calculate the cost of mixed whole-and-fractional amounts
Consolidate repeat application: derive the unit price from a fractional relationship before scaling to find the total cost

Students will solve layered fraction problems systematically, building the multi-step reasoning required for PSLE-level questions.

Primary 5 Lesson 17

This lesson builds foundation in Volume 3, training P5 students to solve spatial reasoning problems involving unit cubes across five problem types.

Learn to find the maximum number of cubes in a box by dividing each dimension and discarding remainders
Practise drawing front, top, and side views of cube solids and counting painted faces using paired opposite faces
Apply spatial reasoning to determine the maximum cubes addable without altering specified views
Strengthen systematic labelling to count unit cubes with exactly a given number of painted faces
Consolidate the inner block strategy to find how many cubes touch the interior walls of a box

Students will solve multi-concept volume problems fluently, building the three-dimensional reasoning required for PSLE spatial questions.

Primary 6 Lesson 17

This lesson builds foundation in Angles 2, where P6 students solve angle problems in complex figures by chaining multiple geometric properties.

Apply ratio and unitary method to find unknown angles when relationships are expressed as fractions or multiples
Practise paper folding reasoning: identify mirror-image angles from folds and use right-angle properties of rectangles and squares
Strengthen isosceles triangle reasoning using equal radii to find unknown angles within circle figures
Consolidate multi-step angle chains across figures combining parallel lines, rhombuses, trapeziums, and equilateral triangles
Reinforce systematic working: identify known angles first, then unlock unknowns in a logical sequence

Students will solve complex multi-property angle problems methodically, building the precision and spatial reasoning required for PSLE geometry questions.