5 Fun and Educational Science Lab Activities for High Schoolers
Would Newton have discovered gravity if the apple had not famously fallen on his head? This “what if” story highlights the power of experience in shaping ideas. For today’s high schoolers, the best way to spark curiosity is through science lab activities that move concepts off the page and into their hands.
Research shows that when students engage in hands-on experiments, they retain concepts more effectively and develop problem-solving skills that last well beyond the classroom. In today’s digital age, where attention spans are shrinking, combining easy scientific experiments with visual learning tools like JoVE videos can make all the difference.
Here are five fun, classroom-ready science experiments for high schools that connect theory to practice and keep students excited to learn.
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1. Observing Cell Division: Onion Root Tip Cells Experiment
When students are first introduced to science lab activities, trying out new and complex things can be intimidating. Cell division is an easy scientific experiment to begin with and try out with your students.
This experiment is one of the simplest yet most interesting science lab activities, explaining an important foundational concept in biology: Cell division and the different stages of mitosis.
Here, the students have to stain and squash onion root tips to identify cells in prophase, metaphase, anaphase, and telophase. This fun science experiment for high schoolers helps them understand the simple concept better and witness the process of cell division firsthand.
Materials:
- Onion root tips
- Microscope
- Slides
- Stains
The Experiment:
Step 1: Students prepare onion root tips, and slides and stain them to reveal the different stages of mitosis (cell division).
Step 2: Students then observe and identify the various phases of cell division, such as prophase, metaphase, anaphase, and telophase, with a microscope.
The Educational Benefits of this Fun Science Experiment
The Onion Root Tip Experiment is an engaging and informative science experiment for high schools that allows students to deepen their understanding of the cell division theory through practical application. Cell division and identifying different stages of mitosis are fundamental concepts in biology that set up a foundation for multiple lessons taught ahead to high schoolers.
How to make this science experiment for high schools more Interesting?
To make this easy scientific experiment more fun, educators can instruct students to grow onion root tips in different colored dyes to see the cell walls stained different colors (a safer alternative to using chemicals).
Educators can also access JoVE’s lab concept video on cell division and mitosis, helping students visually grasp and identify each stage, making the learning process both enjoyable and effective.
2. Beer's Law: Determining the Concentration of a Solution
Trying to explain a complex concept like Beer’s Law through textbook pages and mundane imagery alone and holding their attention can be a tad challenging. However, science lab activities can make this entire process a lot easier and more enjoyable.
The Beer’s Law is one of the fun experiments in science that lets you determine a solution’s concentration by measuring how much light it absorbs. The more the concentration solution, the more light it soaks up.
Materials:
- Spectrophotometer
- Solutions of known concentration (standards)
- Cuvettes
- Colored solutions from common drinks (e.g., Kool-Aid, Powerade, Gatorade)
The Experiment:
Step 1: Students use the Beer-Lambert Law to establish a calibration curve using solutions of known concentration.
Step 2: They will then measure the absorbance of colored solutions from common drinks and apply the calibration curve to determine their unknown concentration.
The Educational Benefits of this Fun Science Experiment:
Through these fun science experiments for high schoolers, you, as an educator can make students understand the relationship between the absorbance and concentration of a colored solution. This is among those science lab activities that help them gain practical experience with quantitative analysis techniques while also having fun.
How to make this science experiment for high schools more Interesting?
Make this one of the most fun science lab activities by studying drinks that the students can relate to like Kool-Aid, Powerade, and Gatorade. Let the students use Beer’s Law to determine their concentration levels. This will help spark curiosity in them and make it more fascinating.
Integrate your lesson with the JoVE Lab concept video on Beer’s Law by signing up for free. The video correlates the concept of absorbance and concentration in a fun and engaging manner. By experimenting with different color additives, students can visually see the principles of Beer’s Law in action.
3. DNA Isolation: Extracting DNA from Plant Material
Complex concepts have always been easier to understand through science lab activities. So, to explain a concept as detailed as this, an easy scientific experiment can go a long way.
Since plants have tough cell walls, isolating DNA involves breaking down those walls and using special chemicals to separate the DNA from other molecules like proteins. Thus, this experiment will help students purify DNA from a strawberry or a pea pod.
Materials:
- Plant material (spinach, green peas, papaya, etc.) / Strawberries
- Dish soap
- Salt
- Rubbing alcohol
- Beakers
The Experiment:
Step 1: In a series of simple steps involving cell disruption, filtration, and precipitation, students will isolate DNA from their chosen plant material.
Step 2: The extracted DNA will be visible as a white, stringy material.
The Educational Benefits of this Fun Science Experiment
This is a science experiment for high schools that will help them gain a concrete understanding of DNA as the genetic material. It will also help them make a complex concept more tangible by seeing the DNA through the naked eye. This integration makes the experiment more interesting and accessible, helping students grasp the fundamentals of genetic material.
How to make this science experiment for high schools more Interesting?
Let your students improve their understanding of the core concept with the JoVE DNA Isolation Video textbook, which provides a detailed explanation of the concept and its practical application.
By correlating this video with the hands-on experiment of isolating DNA from plant materials or strawberries, students can visualize the process and understand the underlying science.
Additionally, art and science combined can often create magic. So, after extraction, the students can stain their DNA with a safe dye and use it to create a piece of DNA art, making this a fun experiment in science.
4. Separating Water Into Hydrogen And Oxygen Using Electrolysis: A Chemistry Classic
To understand complex concepts better, it is important for students to comprehend base ideas like electrolysis. This fun science experiment can help students in doing just that as it demonstrates the power of electrolysis found in elements.
Materials:
- Water
- Salt solution
- Battery
- Wires
- Electrodes
The Experiment:
Step 1: Students have to set up an electrolysis chamber.
Step 2: They have to observe the formation of hydrogen and oxygen gas at the electrodes when an electric current is passed through the saltwater solution in the chamber.
Step 3: They will collect the gases and test their properties.
The Educational Benefits of this Fun Science Experiment
The students will understand chemical reactions, electrolysis, and gas collection techniques more broadly.
How to make this science experiment for high schools more Interesting?
If you are looking to spice up this experiment, you can write a secret message on a piece of paper using lemon juice. Once you’ve had the students separate the gases, you can test out if there is hydrogen gas by letting them reveal the message with it. This can make for a fun science experiment for high schoolers.
You can also utilize video textbooks from JoVE on electrolysis and related concepts to bridge the gap between theory and practice. The video demonstrates the principles of electrolysis in a clear and engaging way, helping students understand the chemical reactions involved.
5. The Tollen's Test: (Silver Mirror Test)
Tollen’s test, also known as the silver mirror test, is a science experiment for high schools that students can learn a lot from. In this test, through a series of science lab activities, teachers can help students distinguish between aldehydes and ketones. This experiment helps students understand that better through videos and lab models.
Materials:
- Tollens’ reagent
- Liquid sample (potentially containing an aldehyde or ketone)
- Test tube
- Test tube rack
- Bunsen burner or hot water bath
The Experiment:
Step 1: Combine a few milliliters of silver nitrate solution with sodium hydroxide solution in a test tube. Then, observe the formation of a brown precipitate (silver oxide). Now, add the ammonia solution dropwise while swirling the test tube continuously until the precipitate dissolves. A pro tip is to avoid adding excess ammonia, which can hinder the test’s effectiveness.
Step 2: Now add a small amount of your liquid sample to a clean test tube containing a few milliliters of freshly prepared Tollens’ reagent.
Step 3: Place the test tube in a warm water bath or hold it carefully over a low Bunsen burner flame for a few minutes, but do not boil.
The Educational Benefits of this Fun Science Experiment
Tollen’s test offers students a tangible, real-world application of chemical reactions, illustrating the principles of chemistry in an engaging and accessible way through easy scientific experiments. It serves as a practical method for the identification of unknown aldehydes and ketones, further enhancing its relevance and making the study of chemistry more stimulating.
How to make this science experiment for high schools more Interesting?
This experiment can be made fun simply by allowing students to bring different objects, such as spoons and coins, and identify which ones are really made of silver. This can give students not only a better learning experience but also give them a real-life science taste through science lab activities.
You may also incorporate the Identification of Unknown Aldehydes and Ketones lab video concept from JoVE that correlates the theoretical aspects of aldehyde and ketone identification with the practical implementation of the Silver Mirror & DNPH Test.
Making Science Lab Activities Accessible and Fun
Science lab activities can transform abstract theories into fascinating, tangible experiences. These activities enable students to bridge the gap between theoretical concepts and their real-world applications, deepening their understanding and curiosity. This is where JoVE videos come into play.
JoVE provides science lab activities in a video lab manual format and concept videos for high schoolers, aiding teachers in prepping students ahead of time. Educators can sign up for JoVE for Free, and leverage this practical approach coupled with a visual approach to turn lab days into eagerly anticipated events for students.
This positively impacts both sides of the classroom. For educators, it simplifies the teaching of complex science concepts, while for students, it transforms science classes into a dynamic and interactive experience.
Why wait? Sign up for JoVE today to access thousands of science videos, lab simulations, and more. Enhance your teaching and give your students the dynamic learning experiences they need to thrive in today’s world.
