## Tips for Teaching the Properties of Similar Triangles

A lesson plan for teaching similarity in triangles along with relevant properties of triangles. The article also contains interesting solved examples to illustrate these properties.

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## Tips for Teaching the Properties of Similar Triangles

## Astronomy Tricks: A Method to Calculate Angle Measurement Between Stars in the Sky

## Using Geometry to Understand Why Venus Is Both A Morning and an Evening Star

## Diffraction Experiment: Measure the Spacing of Grooves on a CD

A lesson plan for teaching similarity in triangles along with relevant properties of triangles. The article also contains interesting solved examples to illustrate these properties.

Taking the whole class for a lesson on star gazing? It’s always difficult to point out a particular star when you have a lot of students to handle. Here is something that will help you in that task. The clock system and angle estimation using your hands can be really handy on astronomy field trips.

Venus has been known to be seen only just before sunrise or just after sunset. This is the reason why it is called the morning star and also the evening star. With a little knowledge of our solar system, we can geometrically prove why this phenomenon occurs. Let us see how.

The subject of light must be studied with experimentation and observation. This simple experiment shows how to use a laser and ruler to measure the spacing of grooves on a CD.