Table 3-2. Excerpts from Science and Technology Standard, K-4

As a result of activities in grades K-4, all students should develop:

Abilities of technological design

  • identify a simple problem

  • propose a solution

  • implement proposed solutions

  • evaluate a product or design

  • communicate a problem, design, and solution

Understanding about science and technology

  • People have always had problems and invented tools and techniques (ways of doing something) to solve problems. Trying to determine the effects of solutions helps people avoid some new problems.

  • Tools help scientists make better observations, measurements, and equipment for investigations. They help scientists see, measure, and do things that they could not otherwise see, measure, and do.

Abilities to distinguish between natural objects and objects made by humans

  • Some objects occur in nature; others have been designed and made by people to solve human problems and enhance the quality of life.

  • Objects can be categorized into two groups, natural and designed (pp. 137-138).

some had no idea; some said a worm is a worm.

Next, Ms. Flores asked students what questions they had about worms and recorded their responses on a large chart. The questions included: “How do earthworms have babies?” “Do they like to live in some kinds of soil better than others?” “Do they really like the dark?” “How do they go through the dirt?” “How big can an earthworm get?”

Ms. Flores divided the class into groups and asked each group to choose a question that they would like to investigate and develop a plan for how to do so. The next day the groups reported plans for their investigations, which they had recorded in lab notebooks. Ms. Flores asked the group how they could

devise tests that she called “fair.” For example, one group wanted to investigate how much water worms like. Ms. Flores asked, “If you wanted to find out if worms like very wet, wet, medium wet, or dry soil conditions, would it be a ‘fair test’ if you put a worm with very wet soil in a bottle, another worm with wet soil in another

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