Lesson 1.5 Science (models)

Hiroto wonders about the changes that take place as a tadpole grows into a frog. What type of model would be most useful for representing how tadpoles change into frogs in the natural world?

• plastic models of two different types of frogs

• a computer animation of the life cycle of a frog

• a diagram that shows the different parts of a frog’s body

• photographs of a tadpole and a fully grown frog

Tags

NGSS.MS-LS4-2

Lukas wants to make a model of the river shown below. What is one limitation the model will have in representing the natural world?

• It will not be able to show the forest.

• It will not be able to show the shoreline.

• It will not be able to show people using the river.

• It will not be able to show the actual size of the river

Scientists use different models depending on the subject they are studying. What is true about all models that represent the natural world?

• They help humans understand nature.

• They represent one object in nature at a time.

• They are the same size as the objects in nature.

• They include every detail of the objects that are in nature.

Tags

NGSS.MS-LS2-3

NGSS.MS-PS1-1

Vanessa reads that a bird’s bones are hollow but strong. Vanessa wants to build a 3-D model of a bird. Which material would be her best choice to use for bones in her model?

• toothpicks

• blades of grass

• modeling clay

• drinking straws

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Ida wants to build a 3-D model based on a complete fossil of an extinct bird. What is one limitation in accuracy that she will face as she works to represent the natural world of the bird?

• representing the size of the bird

• representing the shape of the bird

• representing the colors of the bird

• representing the bones of the bird

Tags

NGSS.MS-LS4-2