Stacking objects
Essential Mathematics · Grade 11 · about 40 minutes
Apply the AP sum to objects stacked so each row has one fewer.
Sign in to read this lesson
Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 8 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Number sequences
- Finding a missing term
- Arithmetic sequences
- The nth term of an AP
- Finding any term
- First term and common difference
- Two terms give the rule
- Arithmetic means
- Sum of an AP
- The sum formula
- Sum of counting numbers
- How many terms?
- Seats in rows
- A savings plan
- Stacking objects
- Geometric sequences
- The nth term of a GP
- Finding a GP term
- a and r in a GP
- Geometric means
- Sum of a GP
- Sum when r is less than 1
- Growth
- Depreciation
- Compound savings
- Sequences: mixed review