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reSolve: Tree biomass
In this sequence of two lessons, students investigate how many trees would be required to supply paper for their school for a year. Students use similar triangles, Pythagoras' theorem and algebra to design and construct a Biltmore stick, used to measure the diameter and height of a tree. They measure trees, calculate their volume and use the density of the tree to find the dry mass of the tree. They estimate the amount of paper used in the school and hence estimate the number of trees that need to be cut down to supply the school's paper needs. The lessons are outlined in detail including curriculum links, vocabulary, sample answers, discussion points and student resources. This sequence is part of the reSolve: Mathematics by Inquiry program.
- Resource details
- Year level
- Year 8 Year 9
- Purpose
- Teaching resource
- Strand
- Measurement
- Topic
- Area, volume and surface area Proportion, rates and ratios Pythagoras and trigonometry
- Audience
- Teachers
- Format
- Downloadable resource
- Numeracy progression
- Understanding units of measurement (P9, P10) Understanding geometric properties (P7) Proportional thinking (P7) Multiplicative strategies (P9)
- Publisher
- reSolve Maths by Inquiry
- Copyright
- © Australian Government Department of Education, Skills and Employment 2021. Creative Commons BY-NC-SA 4.0.
- Keywords
- volume cylinder ratio scale similar
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