Science Buddies' ninth grade science projects are the perfect way for ninth grade students to have fun exploring science, technology, engineering, and math (STEM). Our ninth grade projects are written and tested by scientists and are specifically created for use by students in the ninth grade. Students can choose to follow the science experiment as written or put their own spin on the project.

For a personalized list of science projects, ninth graders can use the Science Buddies Topic Selection Wizard. The wizard asks students to respond to a series of simple statements and then uses their answers to recommend age-appropriate projects that fit their interests.

Lesson Plan Grade: 6th-12th
In this activity, students are asked to create a change in air pressure using a garbage bag and vacuum cleaner, then create an illustration, model or concept map that explains what is happening. This activity is part of the KQED Engineering Is: Bringing Fish Up from the Deep e-book. The e-book explores the science and engineering principles behind the California Academy of Sciences' portable decompression chamber, and includes videos,… Read more
Lesson Plan Grade: 9th-12th
Students learn how astronomers use the transit method to detect exoplanets, by measuring how the brightness of a star changes over time. Animations illustrate how light curves vary for systems with single versus multiple planets, and for planets of different sizes. Students interpret and analyze light curve data from actual exoplanet discoveries, and make connections to Kepler's laws of planetary motion. Read more
Lesson Plan Grade: 9th-12th
Students construct paper recombinant plasmids to simulate the methods genetic engineers use to create modified bacteria. They learn what role… Read more
Lesson Plan Grade: 9th-12th
Students act as if they are biological engineers following the steps of the engineering design process to design and create protein models… Read more
Lesson Plan Grade: 9th-12th
In this activity, students examine how different balls react when colliding with different surfaces. Also, they will have plenty of… Read more
Lesson Plan Grade: 9th-12th
Using the Netlogo platform to run simulations of a basic neural network called the perceptron, students explore a basic, yet powerful, model of machine learning as they are challenged to understand the logic. Students engage in the perceptron model and discover a weakness of the model. The students then move on to run simulations on Netlogo with the multi-layer perceptron which overcomes the weakness in the original perceptron model. Engineering… Read more
Lesson Plan Grade: 9th-12th
In this lesson, students will employ the enzymatic decomposition reaction of hydrogen peroxide to investigate how chemical reactions are affected by enzymes and different substrate concentrations. Students will be challenged to control the rate of the reaction by adjusting the amount of substrate and thus changing the catalase activity. Foam production, created by the enzymatic breakdown of hydrogen peroxide into water and oxygen, will function as a proxy for the reaction rate. Based on their… Read more
NGSS Performance Expectations:
  • HS-PS1-5. Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.
Lesson Plan Grade: 6th-12th
Scientists are concerned that climate change could cause the spread of mosquito populations that carry diseases like malaria, West Nile virus, Zika virus, and dengue fever. In this lesson plan, your students will access real-world data on mosquitoes at different locations throughout the United States, and examine the effects of temperature on mosquito populations. Remote learning adaptation: This lesson plan can be conducted remotely. Students can work independently on the Explore section of… Read more
NGSS Performance Expectations:
  • MS-LS2-4. Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.
  • HS-LS2-1. Use mathematical and/or computational representations of phenomena or design solutions to support explanations of factors that affect carrying capacity of ecosystems at different scales.
Lesson Plan Grade: 9th-12th
Teach your students about the engineering design process with this fun lesson plan. They will design and build a ball-launching machine to knock down a target. Optionally, they can enter their designs in the 2020 Fluor Engineering Challenge for a chance to win a cash prize for your school! Teachers, note that elementary school and middle school versions of this lesson plan are also available, as is a Spanish language version of the basic challenge. Read more
NGSS Performance Expectations:
  • High School - Science & Engineering Practices
Lesson Plan Grade: 6th-12th
In this lesson plan, students will take a closer look at the most recent developments in gene editing. Specifically, they will learn about the CRISPR technology using various interactive simulations and other resources. Based on their gained knowledge, students will create a model of the CRISPR-Cas9 components and create a stop-motion animation video of the molecular mechanism of CRISPR-Cas9. Remote learning adaptation: This lesson plan can be conducted remotely. Students can work… Read more
NGSS Performance Expectations:
  • MS-LS4-5. Gather and synthesize information about technologies that have changed the way humans influence the inheritance of desired traits in organisms.
  • HS-LS1-1. Construct an explanation, based on evidence, for how the structure of DNA determines the structure of proteins, which carry out the essential functions of life through systems of specialized cells.
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Free science fair projects.