NGSS.3-5-ETS1-3

How many variables should a scientist change with each new experiment?

• 1
• 2
• 3 or more
• as many as he wants to

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NGSS.3-5-ETS1-3

You begin to create a prototype of your design only to find that your solution isn't working at all. What should you do?

• Add more tape

• Go back to an earlier stage and choose another solution

• Blame your partner

• Keep going and hope it will be ok

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NGSS.3-5-ETS1-3

What is the purpose of building a prototype?

• To determine the design constraints for the product

• To make sure that the product is doesn't catch on fire

• To test the product and make sure that it is the best solution to the problem

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NGSS.3-5-ETS1-3

Francisco is doing an experiment to see what materials complete a circuit. Which activity will NOT be part of his experiment?

• recording observations

• gathering opinions

• interpreting data

• making a plan

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NGSS.3-5-ETS1-3

In a controlled experiment, how many variables at one time can you change?

• 1

• 2

• 3

• as many as you want

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NGSS.3-5-ETS1-3

A scientist is testing which flavor of ice cream melts the fastest. What would his controlled variables be? (choose ALL that apply)

• The flavor of ice cream

• the kind of cone the ice creams are in

• the place in the room where the ice cream is

• the size of the scoop

• the time it takes to melt

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NGSS.3-5-ETS1-3

The higher the temperature of air in the oven, the faster a cake will bake. Which is a controlled variable?

• Type of oven used

• Type of cake used

• The temperature

• Time for cake to bake

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NGSS.3-5-ETS1-3

An investigation found that more potatoes would be produced on a farm if the soil was fertilized more.

What is a constant in this experiment?

• Number of potatoes

• Amount of fertilizer

• The location of the farm

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NGSS.3-5-ETS1-3

What I change in the investigation

• independent variable

• dependent variable

• constant

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NGSS.3-5-ETS1-3

What is one way to make this model more accurate?

• Use wooden blocks instead of foam balls

• Make the sun larger than the Earth and the moon smaller

• Move the sun closer to the Earth

• Change the order of the foam balls to be moon, sun, Earth

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NGSS.3-5-ETS1-3