Additive colors are interesting to young students. In this paper, we show a convenient and straightforward method to demonstrate this phenomenon by projector. It produces defocus blur and reduces imaging quality for color mixing. We believe this demonstration experiment can be performed in most classrooms.

Many students probably take pictures daily. Whether snapshots of their friends at a Justin Bieber concert or of their latest skateboard trick, these images document changes in a student's life. Digital cameras can do more, however, than record memories to post on Facebook. They can also help students examine changes in their environment. This…

Four experiments are reported exploring whether distractor pictures activate their phonological properties in the course of speech production. In Experiment 1, participants were presented with two pictures and were asked to name one while ignoring the other. Distractor pictures were phonologically related, semantically related or unrelated to the…