Take on this role for your writing:

A company is building a skateboard park in your neighborhood. The workers have called you to ask for advice on building ramps. Should they be concerned about building ramps that are very steep?

In your response, consider including:

• Your claim about steep ramps and how they affect speed
• Your evidence to support your claim
• Explanation of how a model can be used to represent skateboard ramps
• Suggestions to the builders on other factors to test
• Your thoughts on whether steep ramps are good or bad