3-PS2-1 Each force acts on one particular object and has both strength and a direction. An object at rest typically has multiple forces acting on it, but they add to give zero net force on the object. Forces that do not sum to zero can cause changes in the object’s speed or direction of motion.

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Candlelight Science is a group of educator/writers. All have been (most still are) traditional classroom teachers with an average of 20 years of experience. We started our work because of a local need, but quickly realized the need for high quality, inexpensive resources was great. In response, we continue to produce science readers with multiple reading levels (compatible with CCSS text-complexity requirements), lesson plans, and even assessments to make the lives of teachers easier and more productive.

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Total Pages

25 pages

Answer Key

N/A

Teaching Duration

45 minutes

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Standards

to see state-specific standards (only available in the US).

NGSSK-PS2-1

Plan and conduct an investigation to compare the effects of different strengths or different directions of pushes and pulls on the motion of an object. Examples of pushes or pulls could include a string attached to an object being pulled, a person pushing an object, a person stopping a rolling ball, and two objects colliding and pushing on each other. Assessment is limited to different relative strengths or different directions, but not both at the same time. Assessment does not include non-contact pushes or pulls such as those produced by magnets.

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