LESSON 30 SYNOPSIS (13 July – 19 July 2026)

13 July 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 30

This lesson builds foundation in Numbers to 100 L4, covering before-and-after problems within 100, where students find what is known and unknown as a quantity changes.

Learn to tell apart before, change, and after quantities in a problem.
Apply subtraction to find the after amount when items are removed.
Apply addition to find the after amount when items are added.
Practise finding the change amount from before and after quantities.
Strengthen backward reasoning to find the before amount from change and result.
Introduce selecting the one question a scenario asks, among options given.
Reinforce accuracy by spotting errors in solutions.

Primary 2 Lesson 30

This lesson builds foundation in Fractions 1, the first fractions lesson for Primary 2, covering how to recognise, represent, compare, and operate on simple fractions.

Learn to identify a fraction from a shaded or divided figure.
Practise representing a fraction by shading a figure to match it.
Apply the reverse process: completing a figure to match a stated fraction.
Strengthen the idea of a unit fraction by counting equal parts across wholes.
Learn to order fractions from smallest to greatest.
Reinforce the same skill in reverse, greatest to smallest.
Introduce simple addition and subtraction of fractions with the same whole.

Primary 3 Lesson 30

This lesson under Measurement 3 brings together four structured strategies for challenging measurement problems across length, mass, and volume.

Apply the interval concept to work forward and backward between spacing, distance, and count of evenly placed objects.
Strengthen chained reasoning under comparison of units, tracing a quantity through several “times as much” relationships.
Apply combined ratio-and-difference reasoning under comparison of quantity and units.
Use the stacking model to represent quantities with a known difference, then solve for each unit’s value.
Practise translating wordy, multi-relationship scenarios into a clear model before calculating.
Reinforce checking each answer against the relationships stated in the problem.

Primary 4 Lesson 30

This lesson builds foundation in Decimals 3, extending word-problem strategies for decimals into elimination reasoning.

Apply the stacking model to find a unit’s value when item types differ by a known amount and total.
Learn equal elimination, comparing two purchases sharing one item to isolate the other’s cost.
Apply the total concept to find spending on one item when quantities of two items are equal.
Introduce the simultaneous concept, forming two number statements to eliminate one unknown.
Strengthen comparing two scenarios to cancel a shared quantity before solving.
Practise checking a found value against both statements in a problem.

Primary 5 Lesson 30

This lesson builds foundation in Percentage 2, covering three real-world uses of percentage: discount, GST, and interest.

Learn to find the final price and discount using the unitary method or percentage-of-whole method.
Apply reverse reasoning to find the original price from a discounted price and percentage.
Practise discount problems where money saved translates into extra items bought.
Learn to calculate GST both ways: adding it to a price and stripping it from a GST-inclusive price.
Apply simple interest to find interest earned and the year-end total.
Reinforce reverse reasoning to find the original deposit from a total and rate.

Primary 6 Lesson 30

This is a revision lesson under PSLE Revision 2, covering patterns, area, fraction of area, percentage, quantity comparison, and geometry in exam-level questions.

Revise pattern reasoning with repeating sequences and fixed spacing.
Revise area and perimeter of composite figures after pieces are cut away.
Revise fraction of area comparisons between shapes on a grid.
Revise multi-step percentage problems tracing income, spending, and savings over two periods.
Revise unit-value elimination for quantities differing by a fixed cost or length.
Revise percentage change problems with a growing or shrinking group.
Revise angle properties in figures and averages with an unknown difference.