Topic D: Light and Shadows:
Students will learn about light by studying the effects of light on things with in their environment. They learn about light sources, about materials that light can pass through and about what happens when a material blocks or changes the path of light. By observing shadows and and their motions relative to a light source, students discover that light and shadows fall along a predictable path. They discover that mirrors, prisms and a variety of other materials can affect that path by reflecting and refracting light and by splitting light into colours. (AB ED POS)
Lesson # 1: Introduction
Lesson # 2: Walking on Sunshine:
4.9.5: Describe changes in the size and location of Sun shadows during the day - early morning to midday, to late afternoon.
Sun and Shadow Length Game
Lesson #3 Mirror, mirror on the wall...how does light reflect?:
4.9.9: Recognize that light can be reflected and that shiny surfaces, such as polished metals and mirrors, are good reflectors.
Lesson #4: The Future is so Bright, I've got to wear sunglasses.
4.9.1: Recognize that eyes can be damaged by bright lights and that one should not look at the Sun—either directly or with binoculars or telescopes.
CT?: Why is it dangerous to look directly at the sun?
Lesson #5: Bent Out of Shape - Light Refraction
4.9.10: Recognize that light can be bent (refracted)
and that such objects as aquaria, prisms and
lenses can be used to show that light beams
can be bent.
CT?: When does light bend?
Refraction: When light is bent as it moves through one kind of matter to another. (matter: anything that has mass and takes up space. In other words - everything that is around you)
Reflection: to give back or show an image of an object (mirror). Light reflects or "bounces" off the surface of an object.
Activity: Reflection/Refraction interactive notebook
Lesson #6: I have seen the light - but where does it come from?
4.9.2: Identify a wide range of sources of light, including the Sun, various forms of electric lights, flames, and materials that glow (luminescent materials).
4.9.3: Distinguish objects that emit their own light from those that require an external source of light in order to be seen.
CT?: What besides the sun provides us light?
Student Activity: - research sources of light
- mini-lesson: how to decide whether a website is reputable or not.
Lesson #7: I can see you, I think.
CT?: What must happen for material to be categorized as translucent (what happens to light rays)?
4.9.8: Classify materials as transparent, translucent or opaque
Lesson #8: Experimentation Stations
4.9.2: Classify materials as transparent, partly transparent (translucent) or opaque.
1) fill out
Lesson #9 Colour