推和拉
Pushes & Pulls
理解推和拉都是力，它们能改变物体运动的速度或方向，并比较不同力度和方向所产生的效果
Understand that pushes and pulls are forces that can change the speed or direction of an object's motion, and compare the effects of different strengths and directions
学习证据 / Evidence
- 描述推和拉是使物体移动、加速、减速或改变方向的力
- 比较轻轻推和用力推同一个物体所产生的不同效果
- 根据所施力的方向预测物体将移动的方向
- Describe a push and a pull as types of force that make objects move, speed up, slow down, or change direction
- Compare the effects of a gentle push versus a strong push on the same object
- Predict the direction an object will move based on the direction of the applied force
评估问题 / Assessment
{{name}}能解释更用力推玩具车会让它跑得更快，而从侧面推它会改变方向吗？
Can {{name}} explain that pushing a toy car harder makes it go faster, and pushing it sideways makes it change direction?