Draw Conclusions Like a Real Scientist!

When you do a science experiment, you collect information called evidence. After you gather your evidence, you use it to explain what happened. This is called drawing a conclusion.

A conclusion is not a guess it is an explanation that is supported by real evidence you collected. Good scientists always connect their conclusions to what they actually observed or measured.

An observation is something you notice using your senses like seeing dark clouds or feeling wind. The details you record, like measurements or what you see happening, become your evidence.

After collecting evidence, you use it to draw a conclusion. For example, if you see puddles outside and the ground is wet, you can conclude that it rained. Your conclusion explains what the evidence means.

Remember: an observation is what you notice, and a conclusion is what it means. These are two different steps in science.

Before you do an experiment, you make a prediction a thoughtful guess about what you think will happen. A prediction comes before the experiment.

A conclusion comes after the experiment. It uses the real results and evidence to explain what actually happened. After your experiment, you compare your results to your original prediction to see if it was supported.

If your results do not match your prediction, that is okay! Good scientists accept the real results and update their thinking based on the evidence.

Good evidence comes from real observations and measurements like numbers written in a chart or pictures drawn each day. A measurement recorded in a notebook is a great example of evidence.

Feelings, wishes, and guesses are not evidence. For example, saying "I think the red car is fastest because red is my favorite color" is not based on real evidence. Scientists only use facts they actually observed or measured.

When you repeat an experiment and get the same result each time, your conclusion becomes more reliable meaning it can be trusted.

To draw a good conclusion, your experiment must be a fair test. This means you only change one thing at a time. Everything else stays the same.

For example, if you test whether sunlight helps plants grow, both plants should get the same water and soil. The only difference should be sunlight. That way, you know sunlight caused the difference in growth.

Repeating your experiment several times helps make sure your results are reliable. If you get the same result many times, your conclusion is stronger.

You can draw conclusions from many kinds of evidence. Here are some examples you might recognize:

• Plant growth: A plant with sunlight grows tall and green. A plant without sunlight stays small and yellow. You can conclude that plants need sunlight to grow well.
• Ice melting: Ice in a warm room melts in 5 minutes. Ice in a cold room takes 20 minutes. You can conclude that warmer places cause ice to melt faster.
• Float or sink: Metal objects sink, while rubber, wood, and cork objects float. You can conclude that metal objects sink in water.
• Bird migration: Birds fly south every fall and return north every spring. You can conclude that birds fly south to find warmer weather and food.

Observation: An observation is something you notice using your senses like seeing, hearing, or feeling something. For example, noticing that the sky is dark and cloudy is an observation.

Evidence: Evidence is the information you collect during an experiment through careful observation and measurement. A measurement written in a notebook is a great example of evidence. Feelings and guesses are not evidence.

Conclusion: A conclusion is the explanation you draw after collecting evidence. It tells what your evidence means. For example, "Plants need sunlight to grow tall" is a conclusion supported by evidence.

Prediction: A prediction is a thoughtful guess you make before an experiment about what you think will happen. It is different from a conclusion, which comes after the experiment.

Hypothesis: A hypothesis is a possible explanation that can be tested. You make a hypothesis before doing an experiment to guide what you will investigate.

Data: Data is the information you collect and record during an experiment, like numbers, measurements, or counts. For example, counting how many birds visit a feeder each hour is collecting data.

Fair test: A fair test is an experiment where you only change one thing at a time and keep everything else the same. This helps you know what caused the results.

Reliable: When a result is reliable, it means it can be trusted because the same result happened many times. Repeating an experiment helps make your conclusion more reliable.

Evidence-based reasoning: Evidence-based reasoning means using real observations and data to explain what happened or why something occurred. It is the opposite of guessing.

Weather: Weather describes the outside conditions you can observe, like temperature, clouds, wind, and rain. You can use weather observations as evidence to draw conclusions.

Behavior: Behavior describes how an animal acts or moves. Scientists observe animal behavior like squirrels storing nuts as evidence to draw conclusions about what is happening in nature.

You can practice evidence-based reasoning every day! Try these activities to build your skills:

• Look outside and describe what you observe. Then use your observations to draw a conclusion about the weather.
• Test which surface a toy car rolls farthest on carpet, tile, or grass. Record your results and draw a conclusion from your data.
• Grow two plants give one water and keep one dry. Observe what happens and use the evidence to draw a conclusion.

Remember: always base your conclusion on what you actually observed, not on what you hoped would happen.

Drawing conclusions is one of the most important skills in science. It connects everything you do in an experiment from making a prediction, to collecting evidence, to explaining what you found.

As you practice evidence-based reasoning, you will become better at noticing patterns in data and explaining what those patterns mean. These skills will help you in every science topic you explore.

Drawing conclusions and evidence-based reasoning is a foundational science skill that connects to everything you will explore in science. As you grow as a scientist, you will use these skills in every experiment and investigation you do.

The ability to observe carefully, collect evidence, and draw conclusions is at the heart of the scientific method. Every time you ask a science question and test it, you are using evidence-based reasoning to find the answer.

Keep practicing these skills the more you use them, the better scientist you will become!