Topic - Algebra - Patterns and Functions
Task - Constructing Bridges
An engineer wants to know how to calculate the number of spans and supports needed for any length bridge constructed using either of the following two designs.
- Spans are yellow rods
- Supports are red rods
- This bridge design is build by adding supports and spans as pictured above to span any required length.
- Spans are black rod
- Supports are light green rod
- This bridge design is built by adding spans and supports as pictured above to span any required length.
Describe how you would calculate how many rods would be needed to build either type of bridge for any possible size. It is okay for a bridge to extend beyond the desired length by part of a span.