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Grade 4, Science
Std 4: Describe effects of friction on moving objects.
  • Identifying momentum and inertia as properties of moving objects

  • Identifying ways to increase or decrease friction


Lesson Plans:

Investigating Forces Mini-labs
The labs cover buoyant forces; magnetical force; electrical force (static); gravitational force; elastic force; and frictional force.

Falling Test Tubes?
In this activity two glass test tubes and water are used to create a discrepant event demonstrating adhesion and cohesion.

Lift Off
Force, Motion, and Velocity are the subject of this lesson using Balloon Rockets

Momentum
The main objective of this mini-teach is to demonstrate the concept of momentum.

Inventors and Inventions 2
Students will in this lesson conduct an experiment in which they change the size, weight, and wing structure of paper airplanes to see how each plane flies.

Friction in Our Lives
With this experiment, students will explore friction and discuss examples of friction in everyday life.

Friction
Students will make predictions and record results for a friction activity. Students will also gain an understanding of how surface material affects movement.

Momentum
Students will observe the transfer of momentum.

Inertia
In this lesson, students will learn the difference between inertia for objects at rest and objects moving in a straight line.

 

 

Resources:

Do an experiment with Friction Students can type in variables to determine the performance of vehicle brakes.

Gravity and Inertia Students can walk through easy to read information about inertia and then scroll down and click on the game.

Science Online A must see! Great site for links to Blueprint Skills, Lesson Plans, Topical Sites, Interactive Websites for Students and Worksheets

Science Clips You will find an alphabetical list of science interactive movie clips.

 

Suggestions for English Language Learners (ELLs):
(E/B=Entering/Beginning, D=Developing, E=Expanding)
 


(E/B, D, E): Experiment with a magnet and group small objects into two groups (sticks to magnet/doesn't stick to magnet). Using a T-Chart with these headings, have the students tape the items to each list (E): and add labels.
(E/B) Students attach two balloons to string and suspend them upside down. They will then choose several materials (wool, fur, hair, etc.) to rub against each balloon and record through pictures what happens; (D): ...and will chart which materials attract and repel; (E): ...and will infer why certain materials cause a specific reaction.
(E/B): Students will graph and label the results of dropping different objects from a variety of heights; (D): ...and will make oral and written generalizations about falling objects; (E): ...and will do the same using more complex language.
(E/B): Students will use magnets to push toy cars across their desks. They will then draw a picture to show what they have observed; (D): ...and will be given magnets of various strengths to push cars across the table, then chart which magnets exerted more force; (E): ...and will use the charted information to teach other students how magnetic force can be used to move objects.
(E/B): Students will drop a superball from heights of one foot, five feet and ten feet. Students will chart the ball's height after each drop; (D): Students will drop different sized balls, then chart, describe and make generalizations about the results; (E): ...and will list all variables which affect how high the balls bounce.
(E/B): Students will draw and label the six forms of simple machines. Then, working in pairs, will design and make a compound machine; (D): ...and will identify the specific use of each component of their compound machine; (E): ...and will present their creations and their use to the class.
(E/B): Students will drop several items of different weights and record their falling rates. Students will make a book illustrating and labeling their observations; (D): Students will record and graph their findings; (E): ...and will explain their findings and hypothesize the reasons for the results.


 

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