Programming. The Fish Pond

A farmer plans to make a pond. He wants to know how much water he will need to fill the pond. Why is it a good idea to use a model to answer this question before he dig the pond?

• quicker

• fish will die

• slower

• cheaper

What do you need to know about the pond to calculate its volume?

• How deep the pond will be

• How much water one fish needs to live in

• The color of the fish

• How wide the pond will be

• How long the pond will be

What is a mathematical model?

• A model that uses words to describe a system

• A model that uses drawings to represent a system

• A model that uses physical objects to imitate a system

• A model that uses numbers to stand for all the parts of the system.

What is Abstraction?

• A technique of making a problem more complicated by including unnecessary information

• A method of making a problem simpler by leaving out details that are not needed for the purpose and keeping details that are needed for the purpose.

• A way of representing a problem by using real-life examples

• A method of solving a problem by adding more details

Why a model doesn't include all the facts about the real-life system?

• Some facts are not accurate

• Some facts are not relevant for the purpose of the model

• Some facts are too expensive to include

What are input values?

• Pond length

• Pond Depth

• Surface Area

• Volume of water

What units is used to measure surface area?

• square meters

• square liters

• cubic liters

• cubic meters

• meters

What are the units of water volume?

• square meters

• square liters

• cubic liters

• cubic meters

• meters

What is the calculation of the volume of water?

• surface area * depth

• width * length

• width*length*depth

• cubic meters

• depth*width

Each cubic meter of water is enough room for two fish. What is the calculation of number of fish?

• surface area * depth * 2

• volume * 2

• width*length*depth * 2

• volume / 2

• depth*width*4