Objective

By the end of this lesson, the student will understand the scientific method and be able to apply it to create and observe oobleck.

Materials and Prep

• Cornstarch
• Water
• Food coloring (optional)
• Mixing bowl
• Measuring cups and spoons
• Newspapers or plastic sheet (to protect the work area)
• Apron or old clothes to protect clothing
• Pen and paper for recording observations

No prior knowledge is required for this lesson.

Activities

1. Introduction to the Scientific Method

   Explain to the student the steps of the scientific method: observation, question, hypothesis, experiment, data analysis, and conclusion. Use examples to illustrate each step.

2. Create Oobleck

   Guide the student in measuring and mixing cornstarch and water in a bowl. Encourage them to experiment with different ratios to observe the consistency changes.

3. Explore Oobleck's Properties

   Have the student observe and describe the properties of oobleck, such as its ability to flow like a liquid and become solid under pressure. Encourage them to ask questions and make predictions about its behavior.

4. Experiment with Oobleck

   Challenge the student to design and conduct experiments to investigate different factors that may affect oobleck's behavior, such as temperature, amount of water, or adding food coloring. Encourage them to record their observations and analyze the data.

5. Conclusion and Reflection

   Discuss the findings of the experiments and help the student draw conclusions based on their observations. Encourage them to reflect on what they learned about the scientific method and the properties of oobleck.

Talking Points

• "The scientific method is a systematic approach scientists use to investigate and understand the world around us."
• "Observation is the first step in the scientific method. It involves using our senses to gather information."
• "A hypothesis is an educated guess or prediction about what will happen in an experiment."
• "Experiments are designed to test our hypotheses and collect data."
• "Data analysis involves organizing and interpreting the data we collected during the experiment."
• "The conclusion is the final step in the scientific method. It involves summarizing our findings and determining if our hypothesis was supported or not."
• "Oobleck is a non-Newtonian fluid, which means its behavior can change depending on the force applied to it."
• "Oobleck can flow like a liquid when gently stirred or poured, but it can become solid when squeezed or hit with force."
• "Temperature can affect the consistency of oobleck. It may become more runny when warmed up and thicker when cooled down."
• "Adding food coloring to oobleck can create a visually appealing and fun experience."