- John Golden
This was inspired by the excellent sketches from David Cox and Dan Pearcy on fraction multiplication and addition. Be sure to try them! David's fraction addition http://www.geogebratube.org/material/show/id/21313 and his fraction multiplication: http://www.geogebratube.org/material/show/id/21396 Dan's fraction addition http://www.geogebratube.org/material/show/id/21639 The sketch shows you a fraction and 3 part-whole comparisons. Which is closest to the real fraction?
More GeoGebra at http://mathhombre.blogspot.com.