About

A place to test ‘Why is that so?’

Even if you feel like you understand the formula and explanation, there are times when you become curious again when the conditions are slightly different. Why do pendulums with different string lengths move differently? Even if the concentration is different for the same amount of solution, how will the results be different? There are conditions that we can directly compare with life phenomena and changes on Earth.

Rather than showing only one result to these questions, itslabtime.com creates an environment where you can change values ​​and repeat the same experiment. If you encounter a scene that is different from what you expected, use the difference as a starting point for new questions. You can check your observations with numbers and graphs and continue the process of summarizing the reasons for the change in results in your own words.

Four fields, different methods of observation

A total of 80 experiments are prepared, 20 for each field. You can expand and select fields and units in ‘Find Experiments’ on the left, or start by searching for the concept you are curious about.

• Physicsdeals with force, motion, waves, electricity and magnetism, and light. Examine the relationship between movement and measured values ​​by changing conditions such as mass, length, speed, and voltage.
• ChemistryCovers atoms and molecules, chemical reactions, solutions, and acids and bases. Compare how differences in concentration, volume, temperature, etc. affect the reaction and state of matter.
• Biologycovers cells, genetics, the human body, and ecosystem. Observe life phenomena that are difficult to see with the naked eye using models, and check the process by which results vary depending on conditions and samples.
• Earth scienceCovers geology, atmosphere and ocean, and celestial bodies. From plate movement to weather and planetary motion, we examine phenomena that occur over large or long timescales in scaled-down models.

Exploration from prediction to conclusion

The experiment consists of first predicting the results and then checking them directly. Check what needs to be done at each step and move on to the next question based on the results of your observations.

1. Predict: First, think about what the results will be if conditions change. Leave behind what your expectations were and be prepared to compare them to actual observations.
2. Explore: Change the conditions by using sliders, selection buttons, dragging, etc. to suit your experiment. Let's look at how the scene moves and how the measurements change.
3. Measure: Run under guided conditions and record results. If you keep the conditions constant and change just one variable, it becomes clearer what differences you are comparing.
4. Analyze: Read the magnitude, direction of change, slope, and ratio of values ​​in tables and graphs. Identify units and criteria and answer questions explaining your observations.
5. Compare conditions: Let's look at the previous results side by side by applying different conditions. See if the relationships you find in one outcome carry over to other situations.
6. Conclusion: Compare the initial predictions and actual records, and summarize the scope explained by the learned principles and models. The step names and required activities are slightly different for each experiment.

Workspace close to the scene and operations

The experiment scene, measurement values, progress check, and step movement buttons can all be viewed on the same screen. You can change and execute conditions in the ‘Operation’ tab, and answer prediction and analysis questions and view records in the ‘Activity/Record’ tab. ‘Observation data’ contains supplementary information and model guidance for the experiment.

Even on phones and tablets, scenes and tools are laid out to fit the screen size. Long condition lists or tables can be moved around within their respective panels, allowing you to continue viewing the scene without having to scroll down the entire page. Please check the ‘Experiment Guide’ next to the title for an explanation of the purpose and current stage of the experiment, and check the speaker button in the same area for sound effect settings.

When reviewing alone or when talking together

Students who want to revisit the concepts they learned in class can start with familiar units. You can use it to read explanations and connect your understanding to actual operations, or to write down your predictions verbally before seeing the results.

Teachers or guardians can suggest different conditions for the same experiment and discuss why the results are different. It is open to anyone who wants to lightly test out a concept that interests them, and there is no need to complete all experiments in any particular order. Standards for sharing links and using class materials are: Terms of useGuide to this.

Understand the assumptions of the model together

Each experiment is a model that simplifies the conditions for learning. It does not reproduce all the factors and measurement errors of real-world phenomena, so experiment-specific assumptions and limitations must be checked when interpreting scenes and numbers. Even with the same principle, factors omitted from the model, such as friction, temperature, and individual differences, may have an effect in the real environment.

The simulations on this site do not replace the safety procedures of actual drug, electrical, radiation, or biological experiments. Please conduct actual experiments under the guidance of a teacher or expert and follow appropriate safety rules.

Start light, keep asking questions

You can experiment right in your browser without having to install a separate program or create an account. Experiment inputs and results are processed in the current page and are reset when a new page is loaded or the page is closed. Please check the required records before leaving the page. How information is processed Privacy policyThis is explained in .

Keyboard operation and known usage restrictions are AccessibilityYou can check it here. If you see a misrepresentation, an experiment that doesn't work, or an operation that's difficult to use, please let us know the name of the experiment and the situation. Based on your questions and reports, we will create an experiment space that is easier to understand.

operational information

site

itslabtime.com

operator

Jaemin Lee

inquiry

drendrendrencom@gmail.com

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