ICSE Class 8 Maths, Unit 2: Ratio and Proportion
From the CISCE curriculum. 5 key concepts, about 2 days of study at 20 to 30 minutes a day.
What this unit aims at
This theme, at this stage develops in children the ability to understand and appreciate another way of the application of mathematics in daily life called commercial mathematics. The percentage, unitary method, profit and loss, simple and compound interest etc. are based on ratio and proportion. Understanding of ratio and proportion and the skill of applying them in daily life is further required to be strengthened in this class. Children will be properly exposed to higher level problems on profit and loss, compound interest and direct and indirect variations. The problems on these topics should be picked up from daily life situations like banking, taxation, loan transaction etc.
Your child should be able to
- solve slightly advanced problems involving application on percentages, profit and loss, overhead expenses, discount and tax
- explore the difference between simple and compound interest (compounded yearly up to 3 years or half-yearly up to 3 steps only), arriving at the formula for compound interest through patterns and using it for simple problems
- solve simple and direct word problems related to direct and inverse variation, and time and work problems
Key concepts in this unit
- Slightly advanced problems involving applications on percentages, profit & loss, overhead expenses, Discount, tax.
- Difference between simple and compound interest (compounded yearly up to 3 years or half-yearly up to 3 steps only
- Direct and inverse variations
- – Simple and direct word problems
- Time and work problems– Simple and direct word problems
Teach this unit at home
- A day-by-day plan from the CISCE concepts, so you know what to cover each day.
- A step-by-step script for each day, so you know what to say and ask (AI-written from the CISCE curriculum, so check it against your child's school book).
- A quiz at the end.
From the CISCE Curriculum for Classes I to VIII (2016). CISCE sets what is taught, not the textbooks, so schools use different books and there are no page numbers here. Adhian Gurus is not affiliated with CISCE.