Step 8 Objective
Interpret, discuss and synthesise information presented in a variety of mathematical forms. Begin to explain reasons for selection and use of diagrams.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
What if pupils find this a barrier?
Line Crossings
- Draw three straight lines (line segments) so that some cross over each other.
- How many crossings are there?
- Try different arrangements of the lines. What is the maximum number of possible crossings?
- Try using more lines.
- Is there a rule for the maximum for any number of lines? If so, write it down.
Use the problem Line Crossings.
Look at your table of results:
- Explain to me what it shows and what it means. How would you write this down?
- How would these results help you to explain what happens when you add another line?