Behold, the electron is discovered! Take young scientists on a journey back through time to examine JJ Thompson's famous experiment using a Crooke's tube. Pupils manipulate the charge on the apparatus' horizontal plates, observe cathode...

Just a heads up: this lesson is based on a book, Dinosaur Eggs Discovered! Unscrambling the Clues. If you do not have or do not want to purchase the book, you may still find the other activities and worksheets useful in your earth...