Touching the real image

© 2016 IOP Publishing Ltd.This paper deals with what it means to sense and touch a real image formed by a spherical mirror using a proximity sensor commonly utilized in smart phones

Innovative hands-on activities for teaching the colors of pigment

© 2020 IOP Publishing Ltd.In this article, a consecutive series of four hands-on experiments are recommended to teach the colors of paint/pigment and their mixtures. These activities, which are effective in learning about how to make a simple observation and help to build argument-based knowledge about colors, offer an integrated and innovative way of teaching colors of pigment through the colors of light (RGB)