Well, I would acquiring pre-school science experiments from Child Care Lounge or Education because they offer a variety of activities. They also offer their services for a fee of no charge.
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You can find experiments on the Internet, in labs, science fairs, almost any place with science involved .
experiments
You can do anything in a science fair a popularly choice is too do a volcano!
Try making a volcano out with baking soda and vinger. You could even grow crystals with them.
To find science experiments that the class can enjoy I would suggest trying the following sites which offer many great ideas.www.sciencebob.com/sciencefair/ideas.php or www.science-ideas.com/
There are some great preschool workbooks available for teachers. The Learning Center offers great books for reasonable prices. http://www.amazon.com/Preschool-Workbook-School-Zone-Staff/dp/0887431453
On average you seem to be paying a good price for the little preschool books. If you want better deals you can try online or see if any of your friends or family have any that they want to get rid of.
Yes, magnets
In science, evidence is any result of an experiment done with the scientific method. Evidence and experiments to acquire evidence are methods by which one can scientifically prove a claim.
some good science experiments for grade 1 and 2 are: -what liquids do plants grow best in?(water V.S milk, water V.S orange juice, etc.) -do different apples have the same number of seeds? -does food coloring in a liquid change its mass? -do dirty pennies any other coin) affect its mass? -do different color candles Burn at the same rate?
sadly no. but we are coming close to it here in Yale with our science lab experiments. drop by if you can.