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Marvelous Magnets

Science Unit Presentation

Alanna Mullen

on 27 April 2010

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Transcript of Marvelous Magnets

Marvelous Magnets!
Magnetic Forces
Second Grade
Sarah Dougherty
Alanna Mullen
Spring 2010

Unit TEKS:
(2.6) Force, motion, and energy. The student knows that forces cause change and energy exists in many forms.
The student is expected to:
(B) observe and identify how magnets are used in everyday life;

Activities Guided Activity Performance Tasks Science Connection and Field Trip What are Magnets?
Inquiry Lesson
Students will explore a magnet's properties
start a magnet portfolio
pick a Burning Question to explore, test, and write about
have fun experimenting with magnets
and understand their contributions to every day life Magnetic Challenge!
Challenge Lesson
Students will problem solve to isolate a magnet from it's surroundings, and figure out which box contains a magnet
students will apply their knowledge of magnets and problem solving skills in order to succeed in challenging real life situations
they will be split into two groups and switched halfway through the activity
record data on their observation log and write in their magnetic journal

Make Your Own Compass
Guided Lesson

Learning Goal: To guide students through learning about the magnetic poles, the process of making a compass, and how to use a compass.

Objective: The student will be able to observe and identify how magnets are used, and combine materials that when put together can do things that they cannot do by themselves such as building their own compass from everyday materials.

Instructional Procedure:
-Tell the students that they are going to get to make their own compass today out of everyday items.

-Pass out prepared baggies with all of the materials in it.

-Remind the students that they must follow the directions step-by-step or their compass may not work.

-Demonstrate the next step before the students do it. Stroke the needle on the magnet about 30 to 40 times in one direction.

-Tape the needle on the cork so it sticks.

-Have a few students at a time fill their bowls with water. (They do not need to be completely full)

-Put the cork with the needle on it in the water so it floats.

-Wait until the cork stops moving and have the students point which way it is pointing.

-Have one student come up and read the real compass and tell which way is North.

-Have the students take their cork out of the water and carefully label North on it with a marker.

-Explain to the students that it is the “magnetic force of the earth” that makes the needle point north. Once you have one direction, you can find all the other three. Unit Concept Map Did You Know??? Assessments Students can go on a scavenger hunt to find magnetic objects
Set up centers to explore and experiment with magnets
The Children's Museum of Houston
Portfolio including journal writing and observation/ data sheets
Homemade Compass
Magnet Hunt Outside Assignment
Magnetism is a force created by electricity
The Earth and Sun are big magnets
Liquid iron indide the Earth creates (and sometimes changes) the Earth's magnetism
A lodestone or magnetite is a naturally magnetic rock
The North and South Pole are where the Earth's pull is the strongest
Many scientists believe that birds find their way home using the Earth's magnetic field
Some veterinarians use magnets to pick out pieces of metal from large farm animal's stomachs
New trains use magnets to float and run more efficiently
Magnets can be found in your TV, VCR, telephone, stereo, vacuum, refrigerator, washing machine, car, and even your doorbell!

The End
Have FUN with Magnets!!!
Full transcript