One of the first activities we did with this lesson was to check out pulse. We checked it in our wrists and in our necks. Its a little easier to find it in your neck. We read that if when we're resting our heart rate is lower and when we exercise our heart rate increases. So Parkie checked her pulse while we were sitting for 30 seconds. She exercised for a while and I timed her when she checked her pulse again.
We checked out this awesome little video about the heart.
We make an awesome example of our blood. The idea came from here. First I put water and a drop of yellow food coloring into a small plastic bottle. I explain to my daughter that this was like our blood plasma.
Then I put Cheerios in a sandwich bag with a lot of red food coloring. My squeezed the closed bag for a while to make sure that the food color got onto all of the Cheerios. She recognized that these were the red blood cells that we had read about.
My daughter added the red blood cells to the plasma. We didn't have any plastic gloves so it got a little messy.
Then I got smart and we cut a whole in the corner of the bag and dumped the red blood cells in that way.
The last step was to add little marshmallows to represent the white blood cells. Here's our final product:
Click on the worksheet to print your own.
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