Science Review 3

Why should you draw a design before you make a model?

• to test your model

• to solve a problem

• to have a plan for a model

Emily designed a way to make her bicycle seat more comfortable. Which step happened first?

• She chose materials.

• She built a solution.

• She shared her results.

Rochelle wants to build a better rake.

How can she follow the design process?

• buy a new rake

• plan a new design

• tell a friend about it

. Justin's shoelaces kept coming untied.

He designed a way to keep them tied.

What did he do?

• got new shoes

• found a solution

• take of the shoes

.Look at the picture of Kia's little brother. He should not play under the sink. Kia wants her brother to be safe. What problem does Kia need to solve?

• how to teach her brother to walk

• how to stop her brother from crawling

• how to stop her brother from opening cabinets

The picture shows a boy using a tool.

What does the tool help him do?

• scratch a person's back

• stir food that is being cooked

• reach objects placed in high spots

The picture shows engineers looking at a building.

What problem are the engineers solving?

• Our town needs a better bridge.

• Our town needs a better school.

• Our town needs a better playground.

Two students made designs to build a book holder.

What is the best way to compare their designs?

• make the designs again

• think about how they made their designs

• talk about how their designs are alike and how they are different

.Jenna designs and tests a pencil holder. Then she thinks of a way to improve it. What step should Jenna do next?

• find a new problem

• communicate results

• redesign the holder to make it better

.Henry plans and builds a paper airplane.

What should he do next?

• test his design

• find a new problem

• choose new materials