Middle School Worksheets

Evaporation Race - A Water Cycle Lab Investigation | Hydrologic Cycle

Created by
TWFScience

Students will investigate evaporation in the water cycle by measuring how temperature and air flow affect evaporation rate. Using identical shallow dishes filled with equal volumes of water, students set up control, warm, and wind conditions and track changes in water volume over time. Through repea

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

NGSS MS-ESS2-4, HS-ESS2-4

Also included in: The Water Cycle Bundle - Lesson, Worksheets, & Activities | Hydrologic Cycle

Mini Water Cycle Lab - A Hydrologic Cycle Lab Investigation | TWO Versions

Created by
TWFScience

Students will model the water cycle in a closed system by creating a mini “water cycle” using a sealed clear bag. By adding energy from sunlight or a lamp, students observe evaporation, condensation, and water movement over time. Through structured observations, optional temperature tracking, and a

6th - 10th Earth Sciences, General Science, Physical Science

NGSS MS-ESS2-4, HS-ESS2-4

Also included in: The Water Cycle Bundle - Lesson, Worksheets, & Activities | Hydrologic Cycle

Salt & Evaporation: Mass, Volume, & Salinity Changes - A Water Cycle Lab

Created by
TWFScience

Students will investigate how evaporation changes water volume and salt concentration by comparing freshwater, ocean-like salinity, and high-salinity solutions over multiple days. Using shallow dishes, measured salt masses, and repeated mass or volume measurements, students track evaporation and cal

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

NGSS MS-ESS2-4, HS-PS1-3, HS-ESS2-5

Also included in: The Water Cycle Bundle - Lesson, Worksheets, & Activities | Hydrologic Cycle

Water Cycle & Evaporation Lab Bundle | Hydrologic Cycle Investigations

Created by
TWFScience

3 Lab Investigations on the Water Cycle - Evaporation • Energy Transfer • Salinity & Earth SystemsStudents will explore evaporation as a driving force in the water cycle through three connected, hands-on STEM investigations. Across short-term and multi-day labs, students measure evaporation rate

6th - 10th Earth Sciences, General Science, Physical Science

NGSS MS-ESS2-1, MS-ESS2-4, HS-ESS2-5

The Water Cycle Bundle - Lesson, Worksheets, & Activities | Hydrologic Cycle

Created by
TWFScience

The NO-PREP bundle includes a lesson, worksheets, labs, activities, a reading, and multiple case studies on the Water Cycle Students will build a deep, evidence-based understanding of the water cycle as a dynamic Earth system through a carefully sequenced combination of explicit instruction, hands-o

6th - 9th Earth Sciences, General Science, Physical Science

NGSS MS-ESS2-4, HS-ESS2-2, HS-ESS2-5

Cell Organelles Logic Puzzle - Determine the Mystery Organelle Activity

Created by
TWFScience

Cell Organelles Activity - Logic Puzzle & Critical Thinking Lab for CellsLooking for a way to teach cell organelles that goes beyond worksheets and memorization?This Mystery Organelle Logic Lab challenges students to use deductive reasoning, evidence, and scientific thinking to identify cell org

6th - 9th Biology, General Science

NGSS MS-LS1-1, MS-LS1-2, MS-LS1-3

Cell Organelle Detective – Use Clues to Solve TWO Cell Organelles Mysteries

Created by
TWFScience

Cell Detectives: Solving Cell Structure & Function Mysteries - Hands-On Cell Organelles Case File ActivitiesTurn your students into cell detectives with these engaging, evidence-based mystery investigations! In this interactive activity set, students analyze clues, match symptoms to organelle fu

6th - 9th Biology, General Science

NGSS MS-LS1-1, MS-LS1-2, MS-LS1-3

Cell Organelles Logic Puzzles - Determine the Mystery Organelle Activities

Created by
TWFScience

Cell Organelles Activity - FOUR Logic Puzzles that let your students become cell organelle detectives Looking for a way to teach cell organelles that goes beyond worksheets and memorization?This Mystery Organelle Logic Lab challenges students to use deductive reasoning, evidence, and scientific thin

6th - 9th Biology, General Science

NGSS MS-LS1-1, MS-LS1-2, MS-LS1-3

Biology Case Study - CRISPR and Sickle Cell Disease | Reading

Created by
TWFScience

Biology Case Study “CRISPR and Sickle Cell Disease”This resource provides an engaging look at how CRISPR gene editing is being used to fix mistakes in DNA through a real-world case study of sickle cell disease. Students explore how DNA acts as the instruction code for cells and how changes in struct

7th - 10th Biology, General Science

Also included in: Science Case Study Bundle - Ecology, Chemistry, Physics, Biology, and Space

Microplastics Mystery – Human Impact Detective on Plastic Pollution | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on microplastics and plastic pollution. In this case file activity, students analyze evidence, track pollution pathways, interrogate suspects, and build a scientific case to solve the mystery of how micro

6th - 9th Biology, Earth Sciences, General Science

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

The Rock Cycle - Igneous, Sedimentary, Metamorphic Rocks Reading | Grade 8 & Up

Created by
TWFScience

The rock cycle is one of the most important concepts in Earth science, and this reading comprehension article helps students understand how igneous, sedimentary, and metamorphic rocks form and change over time. It explains how rocks are created by melting and cooling, broken down by weathering and e

8th - 12th Science, Biology, Earth Sciences

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

Microplastics & Plastic Pollution Lesson | 7th, 8th, 9th Grade | Human Impact

Created by
TWFScience

This lesson on Microplastics & Plastic Pollution specifically covers what microplastics are, how they form, how they move through ecosystems and food chains, their impact on human health, and why they are difficult to remove. Additionally, your lesson includes my Microplastics Mystery Activity w

6th - 9th Chemistry, General Science, Physical Science

The Air Pollution Mystery – Science Detective | Human Impact | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on air pollution. In this case file activity, students analyze evidence, track pollution pathways, interrogate suspects, and build a scientific case to solve the mystery of how air pollution is affecting

6th - 9th Biology, Earth Sciences, General Science

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

Oobleck: Force vs Flow — Non-Newtonian Fluids STEM Investigation

Created by
TWFScience

Students will investigate non-Newtonian fluids by creating oobleck and testing how different types of force affect whether it behaves like a solid or a liquid. Using cornstarch and water, students observe how fast force causes oobleck to act solid while slow force allows it to flow like a liquid. Th

6th - 11th Chemistry, Physical Science, Physics

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

The Water Pollution Mystery – Human Impact Science Detective | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on water pollution. In this case file activity, students analyze evidence, track pollution pathways, interrogate suspects, and build a scientific case to solve the mystery of how water pollution is damagi

6th - 9th Biology, Earth Sciences, General Science

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

Deforestation & Habitat Destruction Mystery – Human Impact Detective | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on deforestation and habitat destruction. In this case file activity, students analyze evidence, track environmental pathways, interrogate suspects, and build a scientific case to solve the mystery of why

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-ESS3-3, MS-ESS3-4

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

The Biodiversity Loss Mystery – Human Impact Detective | SUB PLAN | Environment

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on biodiversity loss and species decline. In this case file activity, students analyze evidence, track ecological pathways, interrogate suspects, and build a scientific case to solve the mystery of why sp

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

The Invasive Species Mystery – Human Impact Detective | SUB PLAN | Environment

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on invasive species and ecosystem disruption. In this case file activity, students analyze evidence, track ecological pathways, interrogate suspects, and build a scientific case to solve the mystery of ho

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

Climate Change and Global Warming Mystery – Human Impact Detective | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on climate change and global warming. In this case file activity, students analyze evidence, track environmental pathways, interrogate suspects, and build a scientific case to solve the mystery of why Ear

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

Overfishing & Ocean Ecosystem Collapse Mystery – Detective | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on overfishing and ocean ecosystem collapse. In this case file activity, students analyze evidence, track ecological pathways, interrogate suspects, and build a scientific case to solve the mystery of why

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

The Resource Depletion & Mining Mystery – Human Impact Detective | SUB PLAN

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on resource depletion and mining damage. In this case file activity, students analyze evidence, track environmental pathways, interrogate suspects, and build a scientific case to solve the mystery of why

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

The Urban Sprawl Mystery – Detective SUB PLAN | Human Impact on the Environment

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on urban sprawl and land use change. In this case file activity, students analyze evidence, track environmental pathways, interrogate suspects, and build a scientific case to solve the mystery of how citi

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

The Landfill & Waste Crisis Mystery – Detective Case File | Human Impact

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on the waste crisis and landfill pollution. In this case file activity, students analyze evidence, track environmental pathways, interrogate suspects, and build a scientific case to solve the mystery of h

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science

Agriculture & Fertilizer Runoff Mystery – Detective Case File | Human Impact

Created by
TWFScience

Turn your students into science detectives with this engaging, real-world investigation focused on agriculture, fertilizer runoff, and water system collapse. In this case file activity, students analyze evidence, track environmental pathways, interrogate suspects, and build a scientific case to solv

6th - 9th Biology, Earth Sciences, General Science

NGSS MS-LS2-1, MS-LS2-4, MS-LS2-5+3

Also included in: Science Detective Mystery Bundle | Chemistry, Human Body, Environmental Science