Posted by admin | Posted in outdoor toys | Posted on 18-11-2009
Tags: beach, installation, interactive, sand, table, table sand box, table sander, table sander review, table sandpit
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Table Sand
Baking Soda Bonanza - Sand and Water Table Activities
The preschool sand and water table perfectly combines children's desire to play with their need to explore the world around them. As with most fun preschool activities, the sand and water activity center is a place where messes are a given. In fact, the messier, the better! It is also an opportunity for learning about different materials, creating science experiences, developing motor skills and sensory development.
A Few Fun Activities
Baking soda is an inexpensive material. It is finer than sand, and it has some magical chemical properties as well. Ask the children to compare how it feels to how sand feels or pasta or water. Provide them with measuring cups, spoons for digging, and sifters to move it around and manipulate it.
Let's Talk About Baking
Filling the sand and water activity center with baking soda provides you with the opportunity to talk about how it is used to make baked goods. Invite the children to think of yummy treats they like to eat that are baked in the oven. Help them decide which foods are made using it and which are not.
You can also use simple words to talk about chemical reactions and what kinds of materials will react with baking soda. This would also be a good time to discuss other uses for it like spreading it topically on the skin to soothe minor burns or insect stings.
Making Bubbles
Before you move on to a different material for the sand and water activity center, give each child a small cup of vinegar and ask them if they know what will happen when they pour it on the baking soda. They can employ all of their senses in this activity. They will delight in watching the bubbles form and listening to the fizzing sound that is made by the chemical reaction. They can also feel the bubbles, scooping up some baking soda in one hand and pouring more and more vinegar onto it until it completely dissolves.
Talk about the fact that vinegar mixed with baking soda creates carbon dioxide, a gas that people breathe out and that plants breathe in. When all of the baking soda is dissolved and all that's left is a sand and water table full of vinegar, ask the children if they know what happened. Ask them to tell you whether or not they like the smell of vinegar.
The sand and water table is a great place for exploration, experimentation and discussion. Although preschool children aren't ready yet to learn the intricacies of science and chemistry, they can understand simple concepts that they witness themselves, as in the case of the bubbles created by the mixing of baking soda and vinegar. Like sand, baking soda is also a fun material to manipulate and measure. It is a good medium for hiding and finding small objects, as well as practicing writing letters and numbers with fingertips.
About the Author
Jennifer Dobson invites you to take a look at www.MpmSchoolSupplies.com where you will find all kinds of teacher supplies, resource books, classroom decorations, school furniture, classroom carpets, educational toys, and much more. The best part is by shopping at MPM School Supplies you are helping children in need all around the world because 50% of the gross profits are donated to children's charities!
How do I seperate my poppy seeds from my mixture of beach sand, iron, table salt and the seeds?
I have most of it figured out.
Iron-Through magnetization
Table Salt-Through dissolving and evaporating in water.
Poppy Seeds-The plan was that they would all just float to the top and I could scoop them out, and they do float but they fall back down if you touch them.
And the plan with the beach sand is that it would just be left over.
The mixture is of unknown amounts of each substance in a test tube.
So any ideas on the poppy seeds?
If the objective was to find out the weight of each unknown amount, then you would have to weigh it before and after you got it wet to dissolve the water to find the loss in weight from having it washed away, then you would have to weight it after it dried again to find out how much weight in salt disappeared. If you had to "separate" your salt, then you would have to collect the rinse water and dry that as well.
If I had to try to float the seeds, and they were sinking in pure water, I would try to float them by using saturated salt water instead of pure water because the saturated salt water is denser.
The first thing I would do to try to separate the poppy seeds would be to shake the dry mixture side to side, the larger poppy seeds would migrate to the top of the mixture because they should be slightly larger and lighter than the sand particles. If they are much larger than the sand, then I would pass them through a screen to filter out the poppy seeds.
Using a magnet for the iron is a good idea.
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