In a middle school science lab activity, students are looking at how much water objects of varying sizes and weights displace. Lab partners Jack and Jennifer have just put two equal-size ballsone made of plastic and one made of leadinto separate beakers of water and measured how high the water rose in each one. They've observed that the water rose the same amount in the two beakers. Jack says, That can't be right. The lead ball should push the water up more because it's heavier. Jennifer responds, We must have measured wrong. Let's try the experiment again. The two students' reasoning reflects:
a. confirmation bias
b. a substance schema
c. poor visual-spatial ability
d. a nativist view of science development
Question 2
Three of the following strategies are recommended for helping children acquire mathematical concepts and skills. Which one is not recommended?
a. Illustrate abstract procedures with concrete objects.
b. Encourage children to do problems entirely in their heads whenever possible.
c. Encourage children to use their fingers if they find that their fingers help them.
d. Encourage children to invent some of their own strategies for solving problems.
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Students pointing at a computer screen