Teach+Engineering

**About the unit:**
This unit helps students learn how certain colors absorb light better than others. During the lesson students learn how heat is a form of energy that causes elements to rise in temperature or even go through phase change, such as the sun making ice melt in the activity. They also find that solar energy is derived from sunlight and solar cells are photo-electric cells that converts sunlight into energy.


 * Standards that are taught within unit: **

=
 Georgia Performance 2nd grade standard **- " **students will investigate the properties of matter and changes that occur in objects by investigating melting objects." ======

 International Technology and Engineering Educators Association Standards**-** Different materials are used in making things (Grades 0 - 2), asking questions and making observations helps a person to figure out how things work (Grades 0 - 2), Energy comes in many forms (Grades 0 - 2) compare, contrast, and classify collected information in order to patterns (Grades 3 – 5).

Students will....
 * Activity: **
 * Students are divided into groups and given 4 different color boxes (white, yellow, red, black), 4 ice cubes, and a worksheet to record findings
 * predict which color box melts ice first
 * place one ice cube in each color box and either sit them in the sun or under a heat lamp
 * check the boxes every few minutes to record findings
 * record the order and time required to melt for each color on worksheet



Before After