JHS3 Mathematics · Term 2, Week 5
Algebraic Expressions
Full lesson notes coming
Notes for this lesson are being prepared. The curriculum details below are complete and ready to use for your planning.
Curriculum details
- Strand
- Algebra (Strand 2)
- Sub-strand
- Algebraic Expressions (2.2)
- Content standard
- B9.2.2.1 - Demonstrate an understanding of (i) change of subject (ii) substituting values to evaluate expressions, and (iii) factorize expressions that have simple binomial as a factor.
- Indicator
- B9.2.2.1.1 - Perform change of subject of a given formula and use it to solve problems.
- Suggested placement
-
Term 2, Week 5
(Week 17 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
- Curriculum reference
-
Mathematics, Common Core Programme (JHS1-JHS3), 2023, p. 183
Transcribed from the official NaCCA publication. Check this page against the source.
Exemplars (from the NaCCA curriculum)
E.g.1 Perform change of subject for given formulae (i) Make x the subject of the following formulae
E.g.2 Use the concept of change of subject to solve problems involving formulae i. The area of a rectangle is 24cm 2 . If the length is 8cm, find the value of the width. ii. The formula for calculating the area of a circle is given as πr 2 . If a circle has an area of 154cm 2 , what is its radius?[take π = 22 ] 7 iii. The triangle below has an area of 54cm 2 . Find the value of the height of the triangle. iv. The cylinder below has a volume of 330cm 3 . Find the value of the height
of the cylinder. [take π = 22 ] 7