9th Grade Science Resources

Ecology Case Study - Rewilding Wolves in Yellowstone | Reading

Created by
TWFScience

Ecology Case Study "Rewilding Wolves in Yellowstone"This resource provides an engaging look at how the reintroduction of wolves to Yellowstone National Park transformed an entire ecosystem. Students will explore how removing and later restoring a top predator caused major changes in animal populatio

7th - 10th Biology, Earth Sciences, General Science

Also included in: Ecology Case Study Bundle – Real-World Environmental Science Readings

Clean Water Filtration STEM Investigation | Scientific Method 6th, 7th, 8th

Created by
TWFScience

Give students a fast, hands-on engineering investigation: build a low-cost water filter, change only one design choice at a time (layer order, thickness, sealing, or adding charcoal), and measure which design makes the clearest water the fastest—all while staying under a classroom budget cap. With t

6th - 11th Basic Principles, Physical Science, Physics

NGSS MS-PS2-2, MS-ETS1-1, MS-ETS1-2+1

Also included in: STEM Investigations Growing Bundle — Scientific Method, Design, Data & CER

Beetle Genetics STEM Investigation | Scientific Method | 6th, 7th, 8th

Created by
TWFScience

Give students a fast, hands-on genetics investigation: simulate beetle heredity, change only the parent genotypes, and use Punnett squares to predict and compare offspring outcomes. With print-and-cut genotype cards and clear scaffolds, students run multiple monohybrid crosses, extend to one dihybri

6th - 11th Basic Principles, Physical Science, Physics

NGSS MS-PS2-2, MS-ETS1-1, MS-ETS1-2+1

Also included in: STEM Investigations Growing Bundle — Scientific Method, Design, Data & CER

Adaptations by Design - Extreme Environments | STEM Investigation 6th, 7th, 8th

Created by
TWFScience

Students will design a biologically plausible organism, choose one extreme environment, and justify how its adaptations solve real environmental pressures. With a trait bank, word bank, a structured CER, and a Survival Index that rolls into a class bar graph, students connect structure → function →

6th - 11th Basic Principles, Physical Science, Physics

NGSS MS-PS2-2, MS-ETS1-1, MS-ETS1-2+1

Also included in: STEM Investigations Growing Bundle — Scientific Method, Design, Data & CER

Ecology Case Study - Overfishing and Ocean Balance | Reading

Created by
TWFScience

Ecology Case Study "Overfishing and Ocean Balance"This resource provides an engaging look at how overfishing disrupts the delicate balance of marine ecosystems. Students will explore how removing too many fish affects entire food webs, causes trophic cascades, and threatens both ocean biodiversity a

7th - 10th Biology, Earth Sciences, General Science

Also included in: Ecology Case Study Bundle – Real-World Environmental Science Readings

Ecology Case Study - The Impact of Deforestation on Carbon Storage | Reading

Created by
TWFScience

Ecology Case Study "The Impact of Deforestation on Carbon Storage"This resource provides an engaging look at how deforestation affects the planet’s ability to store carbon and regulate climate. Students will explore how clearing forests for agriculture, logging, and development releases stored carbo

7th - 10th Biology, Earth Sciences, General Science

Also included in: Ecology Case Study Bundle – Real-World Environmental Science Readings

Ecology Case Study - The Decline of Pollinators | Reading

Created by
TWFScience

Ecology Case Study "The Decline of Pollinators"This resource provides an engaging look at how the decline of pollinators is impacting ecosystems, biodiversity, and the global food supply. Students will explore how habitat loss, pesticide use, climate change, and disease have led to major decreases i

7th - 10th Biology, Earth Sciences, General Science

Also included in: Ecology Case Study Bundle – Real-World Environmental Science Readings

Ecology Case Study - The Role of Mangroves in Coastal Protection | Reading

Created by
TWFScience

Ecology Case Study "The Role of Mangroves in Coastal Protection"This resource provides an engaging look at how mangrove forests protect coastlines, support biodiversity, and help regulate Earth’s climate. Students will explore how these unique coastal ecosystems act as natural barriers against storm

7th - 10th Biology, Earth Sciences, General Science

Also included in: Ecology Case Study Bundle – Real-World Environmental Science Readings

Ecology Case Study - Ecological Succession After Wildfire | Reading

Created by
TWFScience

Ecology Case Study "Ecological Succession After Wildfire"This resource provides an engaging look at how wildfires shape and renew ecosystems through the process of ecological succession. Students will explore how natural disturbances, though destructive at first, set the stage for regrowth and biodi

7th - 10th Biology, Earth Sciences, General Science

Also included in: Ecology Case Study Bundle – Real-World Environmental Science Readings

Ecology Case Study Bundle – Real-World Environmental Science Readings

Created by
TWFScience

Ecology Case Study Bundle - Engage your students with real-world science through these Ecology Case Studies designed to strengthen scientific literacy, critical thinking, and reading comprehension skills. Perfect for 7th, 8th, 9th, and 10th grades.Save 40% by purchasing this bundle!These case studie

7th - 10th Science, Biology, Earth Sciences

Newton's Three Laws of Motion Worksheets & Activities Bundle | 1st, 2nd, 3rd Law

Created by
TWFScience

Newton's 3 Laws of Motion Activity Bundle - 21 activities and worksheets included. This bundle provides complete, READY-TO-USE resources for teachers who want to help students build deep understanding through hands-on exploration. With a mix of labs, readings, stations, and independent activities, s

6th - 12th General Science, Physical Science, Physics

NGSS MS-PS2-1, MS-PS2-2, HS-PS2-1

Newton's 1st Law Case Study - Bus Stop Surprise | Physical Science Case Study

Created by
TWFScience

Physical Science Case Study - "Newton's 1st Law - The Bus Stop Surprise"This resource offers an engaging, real-world look at how inertia influences motion through the lens of Newton’s First Law. Students follow Maya on an ordinary bus ride turned unexpected physics lesson, observing how her body res

7th - 10th General Science, Physical Science, Physics

Also included in: Newton's 1st Law of Motion Lesson, Worksheet, Activities Bundle | 6th, 7th, 8th

Newton's 1st Law of Motion Worksheet Bundle | 6-Part Newtons First Law Worksheet

Created by
TWFScience

Perfect for classroom instruction, science centers, homework, assessments, and review! Just print & use—no prep required!Introduce and/or review Newton's First Law of Motion, the Law of Inertia, with this engaging, print-ready worksheet bundle designed to help learners understand how and why obj

6th - 10th General Science, Physical Science, Physics

NGSS MS-PS2-2

Also included in: Newton's 1st Law of Motion Lesson, Worksheet, Activities Bundle | 6th, 7th, 8th

Newton 1st Law of Motion STEM Investigation | Penny and Index Card Inertia Test

Created by
TWFScience

Students will investigate Newton’s First Law of Motion by testing how different masses behave when the support beneath them is removed rapidly. Using an index card, a coin, and a cup, students flick the card to observe whether objects of varying mass drop straight into the cup or move with the card.

6th - 11th Basic Principles, Physical Science, Physics

NGSS MS-PS2-1, MS-PS2-2, MS-ETS1-1+2

Also included in: Newton's Three Laws of Motion STEM Investigations Bundle — Scientific Method

Newton's 2nd Law of Motion Worksheet 6- Part Bundle Newtons Second Law Worksheet

Created by
TWFScience

Perfect for classroom instruction, science centers, homework, assessments, and review! Just print & use—no prep required!Introduce and/or review Newton's Second Law of Motion, Force equals mass times acceleration (F = ma), with this engaging, print-ready worksheet bundle designed to help learner

6th - 10th General Science, Physical Science, Physics

NGSS MS-PS2-2

Also included in: Newton's 2nd Law of Motion Lesson, Worksheet, Activities Bundle | 6th, 7th, 8th

Newton's 2nd Law Case Study - Sports Car vs Truck | Physical Science Case Study

Created by
TWFScience

Physical Science Case Study - "Newton's 2nd Law - Sports Car vs Pickup Truck"This resource delivers a clear, real-world explanation of Newton’s Second Law of Motion through a relatable comparison between a lightweight sports car and a heavy pickup truck. Students follow a simple moment at a stopligh

7th - 10th General Science, Physical Science, Physics

NGSS MS-PS2-2

Also included in: Newton's 2nd Law of Motion Lesson, Worksheet, Activities Bundle | 6th, 7th, 8th

Newton's Second Law of Motion STEM Investigation | Balloon Rocket, 2nd Law

Created by
TWFScience

Students will investigate Newton’s 2nd Law of Motion by testing how changing the mass carried by a balloon rocket affects its acceleration. Using a taut string track, a straw, a balloon, and removable mass clips, students run repeated launches to measure travel time and calculate average speed. Thro

6th - 11th Basic Principles, Physical Science, Physics

NGSS MS-PS2-1, MS-PS2-2, MS-ETS1-1+2

Also included in: Artemis Missions, Moon Bases, and Future Space Colonization Unit Bundle

Newton's Third Law of Motion STEM Investigation | Thrust vs Nozzle Size, 3rd Law

Created by
TWFScience

Students will investigate Newton’s 3rd Law of Motion by testing how changing the nozzle opening of a water-powered bottle jet affects the distance it travels. Using a plastic bottle, interchangeable bottle-cap nozzles with different hole diameters, and a simple launch cradle, students observe how th

6th - 11th Basic Principles, Physical Science, Physics

NGSS MS-PS2-1, MS-PS2-2, MS-ETS1-1+2

Also included in: Newton's Three Laws of Motion STEM Investigations Bundle — Scientific Method

Newton's 3rd Law Case Study - How Rockets Accelerate in Space | Physical Science

Created by
TWFScience

This resource offers a clear, real-world explanation of Newton’s Third Law of Motion through the dramatic and fascinating example of a rocket launch case study. Students follow the journey of a research rocket as it lifts off the launch pad, firing superheated gases downward and accelerating upward

7th - 10th General Science, Physical Science, Physics

NGSS MS-PS2-1

Also included in: Newton's 3rd Law of Motion Lesson, Worksheets, Activities Bundle | 6th, 7th, 8th

Newton's 3rd Law Case Study - Why you don't Jump off Boats | Physical Science

Created by
TWFScience

This engaging resource uses an everyday, relatable scenario to illuminate Newton’s Third Law of Motion through a vivid and memorable case study.Students follow two brothers enjoying a day on the lake when a simple decision—to jump off their small boat for a swim—turns into an unexpected physics less

7th - 10th General Science, Physical Science, Physics

NGSS MS-PS2-1

Also included in: Newton's 3rd Law of Motion Lesson, Worksheets, Activities Bundle | 6th, 7th, 8th

Newton's 3rd Law of Motion Worksheet 6- Part Bundle Newtons Third Law Worksheet

Created by
TWFScience

Perfect for classroom instruction, science centers, homework, assessments, and review! Just print & use—no prep required!Introduce and/or review Newton's Third Law of Motion—for every action force, there is an equal and opposite reaction force—with this engaging, print-ready worksheet designed t

6th - 10th General Science, Physical Science, Physics

NGSS MS-PS2-1

Also included in: Newton's 3rd Law of Motion Lesson, Worksheets, Activities Bundle | 6th, 7th, 8th

Newton's Three Laws of Motion STEM Investigations Bundle — Scientific Method

Created by
TWFScience

This Newton's Laws STEM Bundle includes my 1st, 2nd, and 3rd Law of Motion STEM Investigations. Each one is built around true engineering design, fair testing, repeated trials, data tables, graphing, and CER writing. This bundle also includes my 'Newton's Laws of Motion Word Search and Scramble Acti

7th - 10th Chemistry, Engineering, Physical Science

NGSS MS-PS2-1, MS-PS2-2, MS-ETS1-1+7

Mythical Creature Dichotomous Key Activity

Created by
TWFScience

The classroom hum fades into a hush. A warm breeze rustles imaginary leaves as ten fantastical creatures drift, stomp, slither, and shimmer into view. Your students have one tool to navigate this enchanted encounter: a dichotomous key. With each YES/NO choice, they rule out the possibilities—drake o

6th - 11th Basic Principles, Biology

Taxonomy and Classification of Living Things - Grade 8 and Up Reading

Created by
TWFScience

Taxonomy and the classification of living things help scientists organize Earth’s millions of species and understand how they are related. This reading comprehension article explains the modern classification system—from domains and kingdoms to genus and species—and shows how tools like dichotomous

9th - 12th Science, Biology, General Science

Also included in: Science Reading Comprehension Article Mega Bundle | Grade 8 and Up