Wednesday, January 27, 2010

Science and Math

We are continuing our study of organisms by watching the growth of our seeds. These seeds were planted on January 22. We observed them on January 25 and today (January 27). Here are the results:

The pinto beans seem to be sprouting the quickest.
The pumpkin seeds seem to be sprouting the slowest. There are no sprouts yet.
One pea plant has sprouted.
Two sunflower seeds have sprouted.
The table with the pinto beans actually got to record the growth of the plant. Some of the plants have grown as much as 5 inches in 6 days!

We also have a control group of plants: Mrs. O'Brien planted one of each seed. Her results were the same as the students' plants.

Ask your child to tell you what could make these results incorrect. (Examples we came up with were: it was too cold, too hot, too much water, not enough water, not enough air, not enough nutrients in the soil...)
In math, we are continuing to work with money. Today we played a fun game where Mrs. O'Brien gave each table a pile of mixed up (plastic) money.
The tables had to work together to see how quickly they could sort out the pennies, nickels, dimes and quarters.
It was an exciting time as we looked carefully at the money to see the differences in size and color.
We are doing a great job of learning the names and values of money, and of counting our money.
We decided that counting pennies is like counting by ones, counting nickels is like counting by fives and counting dimes is like counting by tens. We have a special chant for counting quarters: 25-50-75-100!
We use our real money in our ziplock bags for our worksheets. We can move the money into the circle drawn on the bag without opening the bag so no money gets lost.
We made different combinations that added up to 25 cents and 50 cents today.
Ian brought in a half dollar, a golden dollar coin and a silver dollar coin. These dollar coins are a little larger than a quarter. The half dollar is the largest coin.
Can your child put the coins in money order?
(Penny, nickel, dime, quarter, fifty cent piece, silver/golden dollar)
Can your child put the coins in size order?
(dime, penny, nickel, quarter, silver/golden dollar/fifty cent piece)
Can your child count a mixture of coins by putting them in order (largest amount to smallest amount) and "count on"?

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