What is the world like when you can't see, or when your vision is impaired? Learn about how Lisa communicates with the world around her with Taking Visual Impairment to School by Rita Whitman Steingold. Learners answer...

Use a function to operate on two variables. Pupils look at operating with complex numbers as a function of two variables. The interactive squares the input and adds a constant to it. Learners visualize the resulting output and its...

Control the spread of a contagious disease. An applet allows pupils to run a simulation on the spread of a disease. Rules govern how the disease is spread and the length of time it takes to recover. Learners view the spread visually and...