We were testing the temperature of water and learning about how to read a thermometer. On a thermometer, teh degrees are marked in increments of 20, so we needed to remember what was half way inbetween 20 and 40, 40 and 60, 60 and 80, 80 and 100, 100 and 120. We saw that if the water was warmer, the red line inside the thermometer went up and reached a higher number. this is interesting because on our 110 charts, you read "down by 10s" to get to a higher number.
We compared the water temperature to find a "just right bath water for a baby" which is just under 100 degrees F. We realized that putting a clump of snow into the water brought the temperature down-sometimes by too much! Ms. Atwood had an instant read thermometer that had a digital read out and we double checked the water temperature. We used the language of "What is the difference between 80 degrees and 50 degrees?" --which is subtraction!
We compared the water temperature to find a "just right bath water for a baby" which is just under 100 degrees F. We realized that putting a clump of snow into the water brought the temperature down-sometimes by too much! Ms. Atwood had an instant read thermometer that had a digital read out and we double checked the water temperature. We used the language of "What is the difference between 80 degrees and 50 degrees?" --which is subtraction!
Next we realized that a thermometer is really like a number line if you turn it on its side. All of sudden we are using a number line to add and subtract two digit number and we feel really proud of ourselves! We measured the water temperature in cup A, and then the water temperature in cup B. We say "What is the difference in termperature between cup A and cup B" because you don't know if the water is warmer or colder in cup A. 110 degrees was too hot for a baby bath.
RSS Feed