Engineering and Design
3rd Grade Science · 16 lessons
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Lessons
- 1The Scientific MethodThe scientific method is a systematic approach to investigating questions. It involves making observations, forming hypotheses, conducting experiments, analyzing data, and drawing conclusions.Lesson
- 2Types of VariablesVariables in experiments include the independent variable (what you change), dependent variable (what you measure), and controlled variables (what you keep the same).Lesson
- 3Writing a HypothesisA hypothesis is a testable prediction about what will happen in an experiment. A good hypothesis is specific and based on prior knowledge or observations.Lesson
- 4The Engineering Design ProcessEngineers use the design process to solve problems: identify the problem, research, brainstorm solutions, build a prototype, test it, evaluate results, and improve the design.Experiment
- 5Analyzing DataData analysis involves organizing, displaying, and interpreting information to find patterns. Scientists use tables, graphs, and statistics to make sense of experimental results.Lesson
- 6How Sound TravelsSound is a vibration that travels through matter as a wave. It cannot travel through a vacuum. Sound travels fastest through solids and slowest through gases.Lesson
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