Formative Assessment Ask students to define a system using the flashlight as an example. For students who have difficulty with the concept of a system and its parts use a puzzle approach. Students demonstrate to the teacher how the removal of one piece will affect the puzzle. Students identify the parts of the puzzle and explain why the puzzle is a system. Description Students examine and compare small and medium sized flashlights.
Fourth graders study the flashlights .
As a result of this investigation students should realize that two dry cells are parts of a flashlight system. If the battery appears to be damaged, do not touch, notify teacher immediately. Formative Assessment 2. Student groups create a comparison chart for the two flashlights. Charts should clearly explain the likenesses and differences of the flashlight parts.