degrees celcius (C)
collecting data from the students in one class
asking all the people in Dexter's family their hair color
noting the hair color of 100 people who enter a store
going to a ballgame and noting the haircolor of the players
what color the eggs are
how large the tadpoles are
how many eggs hatch
how fast the tadpoles swim
write down their measurements
discuss their conclusions
do research at a library
memorize their observations
have each scientist try to convince others he or she is correct
have a discussion
have a friend do the experiment differently
have other scientists try the same experiment
Sal shakes his jar for about twice as long as Jan shakes her jar.
Sal holds his jar tighter than Jan does.
Sal uses a jar with a yellow lid and jan uses a jar with a blue lid.
Sal takes more time to add the same number of drops as Jan
Do differences in amount of water affect bubble height?
Do differences in brands of soap affect bubble height?
Do differences in soap amounts affect bubble height?
Do differences in shaking time affect bubble height?
draw a bar graph
draw the bubbles
take a photo
write it in a paragraph
选择要在Apple App Store上查看的Topgrade应用程序。