This data table provides information to analyze different materials. In the case of Myles, "Material 2" is weak and soft, which does not make an excellent material for a shelf. He would want to pick a material that is hard and would support the weight of items displayed.

Building a bookshelf is a big project, and the material needs to be able to support a lot of weight. The most important property for the building of a bookshelf is strength. If the bookshelf material is weak, it will fall, and the books will spill everywhere.

When building a bridge in real-life, there is a massive amount of planning and testing done to ensure it is safe and sturdy. This class had good plans and materials for building both bridges, but "Bridge A" seems like the most reliable choice for the science fair entry. It was able to hold up six toy cars and did not fall. It did wobble some so the class can make improvements on that portion of the bridge. "Bridge B" collapsed after the weight of three toy cars, so it doesn't seem like the most sturdy bridge.

The hardest rock of the group based on the data Charlie collected is "Rock 2". This rock did not break when shaken or squeezed. All of the other stones broke during one or more of the tests. After analyzing the data, it can be concluded that "Rock 2" is the hardest.

The rock that was the least hard out of the group is "Rock 4". This rock not only broke when it was shaken but also when it was squeezed. It is the only rock from all four tests to break under both conditions. After collecting and analyzing the data, "Rock 4" is the weakest.

This data table provides information to analyze different materials. In the case of Myles, "Material 2" is weak and soft, which does not make an excellent material for a shelf. He would want to pick a material that is hard and would support the weight of items displayed. This leaves "Materials 1 and 3" for consideration. "Material 1" is flexible, which could be a poor quality for a shelf. "Material 3" is strong, hard, and not flexible; it would be the best material for a shelf.

Materials can be tested for a specific purpose or quality. The data from that test can be analyzed to determine which material is preferred for a job or task. Ms. Dube's class discovered that sticky putty held the poster up to the wall for the longest amount of time, so it would be the best choice for an adhesive in the classroom.

The liquid glue would be the worst adhesive product for hanging posters in Ms. Dube's classroom. The liquid glue only held the poster in place for three minutes before it fell off the wall. This material is suited for other purposes, but based on this data, holding signs on the wall is not one of them.

After analyzing the sugar content of each frosting, Hayley wants to choose the frosting with the least amount of sugar. Strawberry Sunset has only 15 grams of sugar, which is the lowest amount of the four choices. If she wants a cake that is lower in sugar, she should use the strawberry frosting.