NS.K4.4 EARTH AND SPACE SCIENCE
NS.K4.1 SCIENCE AS INQUIRY
A can without paper
A can painted black Thermometer
Water Students’ journals
Students will be able to understand the concept of light absorption and light reflection.
After observing and conducting their own experiments, students will record their findings
After studying the findings in their journals, students will identify other objects that reflect
or absorb light and create a chart to display for the class.
The teacher will begin by displaying a KWL chart. Ask the children what they already
know about reflecting and absorbing light. Treat these two words as new vocabulary
words and discuss their meaning. The teacher will model using these words in a
sentence. Continue filling in the chart below by asking, What are they interested in
learning. After the lesson, they can complete the chart with what they learned.
What I Know What I Want to Know What I Learned
Development of Lesson
The teacher will put students into groups of four. Each group will be given two empty
cans (coffee, vegetable, soup, etc.).
Each student will take one of the following responsibilities:
1. Take the paper off one can and leave it uncovered.
2. Paint one can with black paint, preferably flat black paint.
3. Fill each can ½ way with water.
4. Use a thermometer to measure the temperature of the water in each can. They
should be the same.
The students will record this information in their journals.
The teacher will then instruct the children to carry the cans outside and put them in the
sun. They will be left directly in the sunlight for three hours. At the end of the three
hours, the students will retrieve the cans and take another measurement of the
temperature of the water in each can. At this point the teacher will stop the instructions
and ask the students to predict in their journals what will happen. Have them turn to
group members and discuss their predictions.
When the students actually measure the temperature of the water in each can, they are
to record their findings in their journals and share this with their groups.
Refer back to the vocabulary words, absorb and reflect. Ask the students to look at
their findings and connect these words with what happened during this experiment.
Lead students to understand the difference in temperature. Which can absorbed the
light and got hotter? Which can reflected the light the light and remained cooler?
Come to a conclusion together. Lighter objects or clothing relect light and remains
cooler. Dark objects or clothing absorbs and remains hotter.
Students will gather in their groups and brainstorm a list of things that reflect light and a
list of things that absorb light. Students have the options of using books or using the
computer as a resource for this information. Again, record all of this information in their
journals. Together, the group will create a chart displaying their findings.
The students will come together and share their charts with the class. The class will
decide if the charts are correct. Use these charts to review the lesson of the day to
reinforce the concepts of absorption and reflection of light. Complete the last column of
the KWL chart to complete the lesson.
Students will continue this discovery at home by taking a survey with their families. They
will ask what things they think reflect and absorb light. This will be used in class to
review today’s lesson.