LESSON 23 SYNOPSIS (25 May – 31 May 2026)

26 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 23

This lesson builds foundation in Numbers to 40 L2, covering number ordering, quantity comparison, and subtraction within 40. Students work with numerals and apply structured methods for two-digit subtraction.

Learn to identify before and after positions for numbers within 40
Reinforce numerals and number words, matching values to correct spellings
Strengthen reasoning using comparison language — fewer, as many as, more than — across grouped quantities
Apply subtraction without renaming by decomposing tens and ones separately
Practise vertical column subtraction using a structured two-step method
Introduce subtraction with renaming, trading a ten for ones when the ones digit is insufficient

Primary 2 Lesson 23

This is a revision lesson under Select 6, revisiting place value, the four operations, number patterns, measurement, and multi-step word problems. Students practise switching between topics and applying the right method for each problem type.

Reinforce place value, identifying digit values and regrouping across hundreds, tens, and ones
Apply multiplication and division, including equal grouping, scaling, and solving for unknown factors
Consolidate number pattern recognition, extending sequences using consistent rules
Strengthen measurement reasoning for length and mass, including comparison and difference
Practise multi-step word problems requiring two or more operations, including working backwards and combining multiplication with subtraction

Primary 3 Lesson 23

This lesson builds foundation in Fractions 1, developing fluency with simplification, equivalence, ordering, and fraction operations. Students work with unlike denominators throughout.

Learn to reduce fractions to their simplest form using the highest common factor
Reinforce equivalent fractions, scaling numerators and denominators to find missing values
Apply part-whole reasoning to shade and complete fraction figures
Strengthen understanding of total parts in wholes, counting unit fractions across multiple wholes
Practise ordering fractions in ascending and descending order, comparing fractions with unlike denominators
Apply addition and subtraction of fractions with unlike denominators, expressing answers in simplest form

Primary 4 Lesson 23

This lesson builds foundation in Fractions 6, solving problems where a quantity changes but one fraction relationship stays fixed. Four structured methods are introduced in sequence.

Learn the Inward/Outward Unchanged structure to find the group size when one quantity increases or decreases
Apply the same structure to find the amount of change when the group size is known
Introduce Internal Proportion Transfer, solving for the resulting group after quantities shift within a single set
Strengthen reasoning with External Proportion Transfer, using difference and units to solve across two groups
Consolidate the habit of identifying what is fixed versus what changes before choosing a solution method

Primary 5 Lesson 23

This lesson builds foundation in Rate 1, covering five structured problem types from basic unit rate to complex combined and opposing rate scenarios.

Introduce rate as a quantity per unit, finding totals and solving for missing values by scaling
Apply part thereof pricing, reading tiered rate tables to calculate charges across stepped intervals
Practise difference in rates, using the gap between two individual rates to solve for the unknown
Strengthen reasoning using sum of rates to find time taken when two parties work together
Consolidate understanding of opposing rates, where one action fills while another simultaneously drains

Primary 6 Lesson 23

This lesson develops skills in Volume 2, combining liquid transfer problems with 3D spatial reasoning across four structured problem types.

Apply the total volume concept to find resulting water heights after transfer between two tanks
Strengthen proportionality reasoning, using a shared volume to solve for unknowns such as base area
Introduce the common base area concept, solving for a shared base using volume, height, and percentage conditions
Reinforce different views of solids, drawing top, front, and side projections from cube arrangements on a grid
Practise reasoning about which cubes can be added or removed without altering a given projection