HOMEMATHS MEDICINE BOOKSMT and other GEOMETRY TASKSCHALLENGES etc
The acclaimed pocket books from Professor Smudge Published by DEXTER Graphics
Notes:

One way to use the slider is to click on the slider, then use the arrow keys to change the value.

Although we see scale drawings of the triangle as it changes, it is not always easy to discern precisely how the shape changes. This means that students will need to resort to more than mere visual evidence to make a convincing case about properties of the changing shape.

challenge!WaitroseEcoversurreal mathsWorld's hardest easy geo prob?BLOGSMOVIE downloadsPMP report

Growing triangles (aka Four triangles)

Move the slider. Watch the triangle grow.


Input new numbers to change the rule for the height and base.

Created with GeoGebra