An assessment task in which students will demonstrate an understanding of light and fair testing.
This lesson contains a link to an external video. Please watch the video prior to presenting this lesson to ensure that the content is appropriate for your students.
Watch the What Are Shadows video on YouTube. Afterwards, discuss and list the different ways the boy changed his shadow.
Explain to the class that they are going to design a fair test to investigate how shadows change. Ensure that the students understand that they are not going to conduct the experiment, they are simply planning it.
Explain to the students that they must plan their experiment independently, demonstrating what they have learned about light, shadow and fair testing throughout the unit.
Monitor and support the students as they independently complete the worksheet. If a time limit has been placed on the task, ensure to provide the students with regular feedback on how much time is remaining.
Collect the worksheets when they are completed, or after the set time period. These could be included in a portfolio of work samples and used to assess the students’ understanding of the unit objectives.
Encourage more capable students to include additional detail in their explanations and diagrams.
Allow less confident students to demonstrate their understanding verbally and/or use concrete materials to support their explanation of ideas.
Suggested Assessment Strategies
used strategic whole class or individual questioning
observed student participation during learning activities