The 5th grade is exploring astronomy spent the last class learning about the phases of the moon. Using modeling clay, they learned about the relative sizes of the earth and moon. Next, using "moonpops" they were actually able to create moon phases as the moon orbited around the "earth" (the student).
Thursday, November 18, 2010
Tuesday, November 16, 2010
Third grade is beginning a unit on the properties of minerals. They are testing different types of minerals to determine their unique properties. Tests include streak, light, luster, magnetism and hardness. The culmination of the project will be their own mineral field guide.
Thursday, November 11, 2010
If you wanted to create a scale model of the universe using a soccer ball as the sun, just how much room would you need? The 5th graders were very surprised to find out that such a model wouldn't fit in the science room and, in fact, wouldn't even fit on our campus! If you see a 5th grader, ask just how much space you would need!
As part of their study of bird adaptations, the 2nd grade was treated to a presentation Michelle Bassler from the Academy of Natural Sciences. Michelle brought three owls and a red-tailed hawk. The students were able to see these magnificent bird up close and learn about the adaptations that raptors have that make them such efficient predators.
Watch this blog for directions for interesting experiments that you can try at home! This is a chemistry experiment from our Kindergarten Chemistry unit.
Chemistry Fun with Pennies
You can explore chemical reactions and clean pennies at the same time.
- dull pennies
- 1/4 cup white vinegar (dilute acetic acid)
- 1 teaspoon salt (NaCl)
- 1 shallow, clear glass or plastic bowl (not metal)
- paper towels
Pour the salt and vinegar into the bowl. Stir until the salt dissolves.Dip a penny halfway into the liquid and hold it there for 10-20 seconds. Remove the penny from the liquid. What do you see?Now dump the rest of the pennies in and wait to see them shine!
Pennies get dull over time because the copper in the pennies slowly reacts with air to form copper oxide. Pure copper metal is bright and shiny, but the oxide is dull and greenish. When you place the pennies in the salt and vinegar solution, the acetic acid from the vinegar dissolves the copper oxide, leaving behind shiny clean pennies. The copper from the copper oxide stays in the liquid. You could use other acids instead of vinegar, like lemon juice.