Solving Problems: Dams, Bridges, and Canals

Information for Teachers

Curriculum links

This investigation is linked to the following Grade 4 Next Generation Science Standards.

ETS1.A: Defining and Delimiting Engineering Problems

Possible solutions to a problem are limited by available materials and resources (constraints). The success of a designed solution is determined by considering the desired features of a solution (criteria). Different proposals for solutions can be compared on the basis of how well each one meets the specified criteria for success or how well each take the constraints into account. (3-5-ETS1-1)

ETS1.B: Developing Possible Solutions

Research on a problem should be carried out before beginning to design a solution. Testing a solution involves investigating how well it performs under a range of likely conditions. (3-5-ETS1-1)

ETS1.C: Optimizing the Design Solution

Different solutions need to be tested in order to determine which of them best solves the problem, given the criteria and the constraints. (3-5-ETS1-3)

How to search the internet

1 Keep your request short

Fewer words will give a more accurate search.

2 Choose exactly what you want

For example: Arctic Circle Climate

3 Use quotes

Double quotes around a set of words tell the search engine to consider those exact words in that exact order without any change. For example: “Arctic Circle Climate”

4 Use the plus sign (+)

If you add a plus sign (+) between words, the internet will search for all the words. For example: migrate+birds+whales+mammal

5 Use the minus sign (–) to say what you don’t want

Use a minus sign (–) to show words you do not want to appear in your results. For example: if you search for burrowing animals and do not want mammals in your search,  –mammals will exclude mammals. Note that you need to put a space before the minus sign for the word to be excluded.

6 Be very clear about what you don’t want