LESSON 22 SYNOPSIS (18 May – 24 May 2026)

18 May 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 22

This lesson builds foundation in Numbers to 40 L1, extending number work into the range up to 40 across writing, ordering, place value, and addition.

Learn to write two-digit numbers in words, connecting numerals to language representation
Apply place value thinking to decompose numbers into tens and ones
Practise comparing and ordering numbers, arranging sets from smallest to largest
Strengthen addition without renaming by keeping the tens digit unchanged while adding to the ones
Introduce addition with renaming, where ones exceed 9 and a ten must be carried to the tens column

Primary 2 Lesson 22

This is a revision lesson under Select 5, revisiting key P2 topics including place value, the four operations, measurement, and word problems. Students apply prior strategies across a mixed set of problem types.

Reinforce place value reasoning and 3-digit number comparisons
Consolidate multiplication and division relationships, including equal grouping and products
Practise number patterns and number formation under digit constraints
Apply part-whole and comparison models to word problems involving totals, differences, and three-quantity scenarios
Strengthen measurement in length and elapsed time
Consolidate multi-step problem solving with two unknowns

Primary 3 Lesson 22

This lesson builds foundation in Geometry, introducing angle types, perpendicular lines, and parallel lines. Students develop spatial reasoning through identifying, classifying, and constructing geometric relationships.

Learn to identify and classify angles as acute, right, or obtuse using a set square as reference
Practise counting specific angle types within multi-sided figures, developing systematic visual scanning
Introduce perpendicular lines, identifying pairs that meet at right angles in labelled figures
Apply construction skills to draw perpendicular lines accurately
Introduce parallel lines, understanding that they remain equidistant and never meet
Consolidate identification and construction of parallel lines across varied configurations

Primary 4 Lesson 22

Under Fractions 5, students solve comparison word problems where quantities are expressed as fractions. The lesson trains systematic use of the bar model to move from known fractions and differences to unknown unit values.

Introduce comparison of quantity problems with a known group and difference, requiring fractional alignment
Apply equal units thinking to find unit values from a given difference
Strengthen problems where the value of units in a difference must be determined
Practise finding unit values when the total is the known quantity
Consolidate quantity and value problems that combine difference and fractional reasoning

Primary 5 Lesson 22

This is a revision lesson under Select 6, revisiting advanced P5 topics across whole numbers, fractions, area, and volume. Students practise strategy selection across a mixed set of higher-order problem types.

Reinforce whole number comparison involving age, multiples, and transfer scenarios
Apply the grouping concept to problems where quantity difference and total value are given
Strengthen proportion and transfer reasoning, where an external transfer changes an existing difference
Practise fraction remainder problems requiring multi-step computation
Consolidate area of triangles within composite and shaded-region figures
Apply volume reasoning to cube-packing and solid-view problems

Primary 6 Lesson 22

Under Volume 1, students tackle four structured problem types — foreign objects, water transfer, fill rates, and simultaneous drain-and-fill. Each builds a distinct reasoning layer within the same volume framework.

Introduce foreign object problems, isolating object volume from water level rise and base area
Apply multi-step reasoning to problems involving object removal and volume comparison
Introduce transfer problems, using volume conservation when a divider is removed between tanks
Strengthen rate reasoning across two-tap problems where taps start at different times
Consolidate difference in rate problems involving simultaneous filling and draining