## Additional Learning Tools and Resources

Watching a presentation is a passive activity. Getting information is important ... but its not the destination or end point. Now that you've watched the video, its time to do something with the information you've heard. It's time to act on it. The resources below provide an opportunity to do this. We encourage learners to solidify their learning through the use of one or more of the following resources.

The Calculator Pad, Refraction and Lenses Chapter, Problem Sets 10 - 12

If you need practice solving Physics word problems, you're going to have difficulty finding a better tool than our Calculator Pad. You will have problems of varying difficulty, immediate feedback, multiple opportunities for correction, and a collection of help tools to guide you through to the solution. These sets include critical angle calculations.

Minds On Physics, Refraction and Lenses Module, Mission RL6

Student persistence with Minds On Physics combined with reflective thinking and the use of our Help function will put any student at the top of the class. This mission pertains to total internal reflection and the critical angle. It's a perfect follow-up activity.

Physics Interactive, Refraction and Lenses Chapter, Refraction Simulation

Sometimes you learn best by playing. And our simulations allow you to do just that. Our Refraction simulation allows you to explore the variables that impact the amount of light energy that reflects and the amount that refracts. Explore TIR using our simulation and then follow it up with a Concept Checker on the same topic.

Concept Builders, Reflection and Refraction Chapter: Total Internal Reflection

Concept Builders will help do what it's name boasts of - build a concept. This Concept Builder will test your understanding of the requirements for total internal reflection. The activity targets concepts from this video and the previous one on Total Internal Reflection.

The Physics Classroom Tutorial, Refraction and the Ray Model of Light, Lesson 3, The Critical Angle

Our written tutorial pages form the basis of most videos. So when you need a quick reference, the Tutorial page is a great place to start. This page provides complete coverage of the of the video.