1. CABRI Wrexham Schools Quality Circle 24 th October 2006

2.  CABRI  Session 1  What is CABRI  Familiarising with the menus  Basic construction with CABRI  Lesson planning  Session 2  Coordinate geometry  Locus  Lesson planning  Conclusion

3.  What is CABRI  Dynamic geometry  Construction  Transformation  Coordinates

4. pointer points lines curves construct transform macro define measure display draw

5.  Menu  Points  pointer  Lines  line  segment  triangle  polygon  regular polygon  vector

6.  Menu  Curves  circle arc conic  Construct  perpendicular line parallel line  perpendicular bisector angle bisector  midpointcompasslocus  measurement transfer

7.  Menu  Transform  reflection  rotation  enlargement  translation

8.  Menu  Measure  length  area  angle  calculate  table  gradient  equation and coordinates

9.  Menu  Display  mark angle  numerical edit  label  comments  fix  trace  animation

10.  Menu  Display  hidehide button  colourfill  dotted lines line thickness (Ctrl+d)  axes new axes  define grid  modify appearance

11.  Classroom Activities  Prepared files  On-screen instructions  Obvious files to move  Hiding unnecessary objects  Using “Fix” to keep the image on the screen  Using colours  Jotting sheet for children or opportunity to print

12.  Lesson planning  Teaching mathematics not CABRI  Using CABRI for presentation only  Opportunities for children to:  investigate  find out  predict and presuppose  prove

13.  Activity 1  Plan lesson files that would help teach:  Basic angle rules  Angles in a triangle  Angles in a polygon  Angles in a circle

14.  Activity 2  Construct a Square  points  straight line  segment  circles and compass only  Construct a hexagon, octagon and dodecagon  Construct a kite, rhombus, parallelogram, trapezium

15.  Activity 3  Construct an Easter Egg  point  circle  line  arc  reflection

16.  End of session 1  Feedback  Teaching issues

17. Presentation  Prepared file “Replay construction”  eg enlargement  Interactive  using a handle  Dynamic  Square and triangular grids

18. Coordinate geometry  axes  grid  coordinates  equations  straight lines  gradient  conics

19. Locus  animate  trace  locus (the 4 th menu - construct)  measurement transfer

20. Locus – Examples  circle  fixed distance from a rectangle  sine graph

21. Activities  Reflection and coordinates  Rotation and middle  Rotation and coordinates  Straight line, gradient and interception  Combine rotation and reflection

22. Using CABRI  Familiarising with the software  Handbook  Departmental training  Sharing lessons  Lesson observations  Network files  Part of the scheme of work

23. Further Developments  CABRI plus  create curves from equations  import pictures as backgrounds  locus equation

24. Disc  Lessons using CABRI  Over 50 CABRI files  Useful weblinks  Useful books  Relevant questions  Square root activity  Copy of this PowerPoint presentation