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Math & Science

Lessons on Matter

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 litgirl2 Joined: Jan 2010 Posts: 165 Full Member
litgirl2

Joined: Jan 2010
Posts: 165
Full Member
Lessons on Matter
10-18-2010, 03:30 PM
 #1

We have a new unit to teach for fourth grade on matter. Anyone have any great ideas for matter for fourth graders that would be hands on and FUN? Many thanks,
Shar

 1956BD Joined: Aug 2007 Posts: 22,667 Senior Member
1956BD

Joined: Aug 2007
Posts: 22,667
Senior Member
Matter Experiment
10-19-2010, 06:17 PM
 #2

Start with a solid by giving each student an ice cube in a snack size baggie.

Ask how you can change it to a liquid. Remind them not to take it out of the bag, tear the bag or put the bag in their mouths. I live in Texas and we do this experiment in early September, so my students always say let's go out in the sun. So if the weather agrees and outside experimentation is an option, that always makes it more fun for your students.

Tell students to come see you when they have a liquid. Open the baggie and add a half Alka Seltzer tablet and zip the bag back up.

When the baggie begins to expand ask your students why. Also ask them if they now think gas takes up space.

I buy generic Alka Seltzer and it works fine. Snack size baggies give a more dramatic effect as they are smaller. I have done this the last two years and have not had a baggie blow up as yet. I would have a couple of extra baggies with water ready if needed. Some baggies spring a leak and then the gas escapes and students are very disappointed.

 h0kie Joined: Aug 2005 Posts: 6,664 Senior Member
h0kie

Joined: Aug 2005
Posts: 6,664
Senior Member
Matter
10-21-2010, 05:24 AM
 #3

My 3rd graders make Oobleck & Gak and then have to explain whether they're a liquid or a solid and why they believe their answer is right. Then I show them the Mythbusters clip where they make Oobleck and talk about Non-Newtonian fluids.

 suebee77 Joined: Aug 2010 Posts: 148 Full Member
suebee77

Joined: Aug 2010
Posts: 148
Full Member
bee bees
10-23-2010, 12:50 PM
 #4

Get three petri dishes. Fill the bottom of one so they barely move. Put less in the second and very few in the last. Put them on the overhead and show how the bb's just vibrate in the "solid" or full one, move more in the "liquid" and finally a LOT in the "gas."

 Cindy2012 Guest
Cindy2012

Guest
response to suebee77
09-15-2012, 02:04 PM
 #5

That is such a great idea. Simple, yet effective. TY

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Math & Science