Describe motion and investigate pushes and pulls

Learning goal (for the adult): Describe position relative to a reference object, recognize changing position as motion, and investigate how pushes and pulls can affect motion. Use a small classroom toy that rolls reliably on a clear, level surface. Keep the investigation on a table with a barrier or on a clear floor so moving objects do not fall or become tripping hazards.

Position tells where an object is relative to something else. “The car is beside the block” names a reference object. “The car is there” may be unclear to someone who did not see the gesture. Place a block at a marked location and keep it still while describing the toy's changing position. At first the car may be close to the block; later it may be farther away.

An object is moving when its position changes relative to the chosen reference. The path is the route it follows. A straight path does not bend. A zigzag path changes direction at several corners. A circular path is round: it goes around a center and stays the same distance from that center all the way around. Back-and-forth motion reverses along a route to return, often again and again. These descriptions tell about movement; they do not identify how many objects were used.

The illustration shows four possible paths for one moving object in separate trials. The lines are traces of where the object travels, not walls or additional cars. The dots mark reference starting places. In the back-and-forth panel, two nearby lines let us show opposite directions clearly; the intended movement can go out and return along the same route.

A push or pull is a force. It can start motion, change speed, change direction, or help stop an object. Gently push a resting car away from your hand. Then place it at rest again and pull it using an adult-attached short handle or by holding it directly. Describe the action and the change separately: “I pushed the car; it moved farther from the block.”

Investigate a change while the object is already moving. A gentle push in the same direction can make a rolling toy move faster. A gentle opposing touch can slow or stop it. A sideways push can change its direction. These are possibilities to investigate under controlled conditions, not a guarantee that every push produces visible movement. A toy against a firm barrier may stay in place even when gently pushed.

When a push makes a resting toy start moving, or makes a moving toy speed up, energy is transferred to the toy; when a toy slows and stops, its energy of motion goes into its surroundings, such as slightly warming the surface. A sideways push can also change a toy’s direction. For this grade, connect the action to the observed change without requiring calculations. Compare trials on the same surface with the same toy. Do not claim a farther stopping distance always proves a greater speed if the surface, slope or trial conditions also changed.

Read aloud to the children: Where is the toy car? Tell what it is near: “The car is beside the block.” When the car moves, its place changes. A car can go straight. It can go in a zigzag. It can go around in a circle. It can go back and forth. A push or a pull can make it start moving. It can make it go faster or slower. It can make it turn. It can make it stop.

Worked example 1: Improve a position description. “The car is close” does not say close to what. “The car is close to the fixed block” supplies the reference. A later observation, “farther from the block,” describes a change that can be checked.

Worked example 2: Identify a path. A toy moves from a starting mark to a second mark, then returns to the start along the same route. That is back-and-forth motion. Going around a central block on a round path that stays the same distance from the block would instead make a circular path.

Worked example 3: Compare actions. A car rolls toward a child's hand and is gently stopped. The force from the hand changed the car's motion by slowing it to rest. A different gentle sideways contact might change direction. Name the actual observed change rather than assuming a push can only make something faster.

Guided investigation: Make four paths with removable floor marks and trace each with the toy in separate trials. Describe the path and the toy's position relative to a fixed block. Then conduct gentle start, slow, stop and direction-change trials, recording the action and observed result in two columns.

Independent tasks: Label the four illustrated paths, improve an unclear position sentence, and explain two different effects a push or pull can have. Draw before-and-after positions with the same reference object. Include an example in which a gentle push against a barrier does not produce visible movement.

Feedback: If a learner counts the path lines as extra toys, trace one trial with a finger and revisit the caption. If “push” is always equated with “faster,” revisit the stopping example. Credit descriptions that identify a reference, an action and an observed change rather than merely naming the toy.