SKIP TO CONTENT
Worksheet Generator
Subjects
Grades
Worksheets
Games
Build a Worksheet
More Resources
Roly Recommends
Math Month
Subjects
Grades
Worksheets
Games
Build a Worksheet
More Resources
Roly Recommends
Math Month
All Subjects
Science
Subtopics:
Physical Science
Life Science
Earth and Space Science
Engineering and Science Inquiry
Show Less
Filters
Search for: hard
✕
Science
✕
Activities
✕
2nd - 4th Grade
✕
Subjects
Math
English Language Arts
Science
Social Studies
Grade Level
Pre-K
K
1st
2nd
3rd
4th
5th
6th
7th
8th
Early Childhood
Elementary School
Middle School
Resource Type
Worksheets
Lesson Plans
Interactive Worksheets
Activities
Offline Games
Occasion
Birthdays
Easter
Summer
Holidays
Game Type
Outdoor Games
Arts & Crafts
Arts & Crafts
Paper & Glue Crafts
Construction & Sculpture
Painting & Drawing
Recipes
Mains
See More
Clear All
View 81 results
Showing Results for hard
81 results
Search for: hard
✕
Science
✕
Activities
✕
2nd - 4th Grade
✕
Clear All
Sort by:
Relevance
Most recent
Most popular
Alphabetical A-Z
Alphabetical Z-A
All filters
81 results
Sort by:
Relevance
Most recent
Most popular
Alphabetical A-Z
Alphabetical Z-A
Testing Water Hardness
Activity
Testing Water Hardness
Fourth Grade
Engineering and Science Inquiry
This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.
Activity
Testing Water Hardness
Activity
Testing Water Hardness
This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.
Fourth Grade
Engineering and Science Inquiry
Activity
Energy From Garbage: How to Make Biogas
Activity
Energy From Garbage: How to Make Biogas
Fourth Grade
Engineering and Science Inquiry
It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.
Activity
Energy From Garbage: How to Make Biogas
Activity
Energy From Garbage: How to Make Biogas
It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.
Fourth Grade
Engineering and Science Inquiry
Activity
Superhero Strength
Activity
Superhero Strength
Third Grade
Physical Science
This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!
Activity
Superhero Strength
Activity
Superhero Strength
This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!
Third Grade
Physical Science
Activity
Explore the Phases of the Moon
Activity
Explore the Phases of the Moon
Third Grade
Earth and Space Science
We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.
Activity
Explore the Phases of the Moon
Activity
Explore the Phases of the Moon
We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.
Third Grade
Earth and Space Science
Activity
Spinning Eggs
Activity
Spinning Eggs
Second Grade
Physical Science
Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!
Activity
Spinning Eggs
Activity
Spinning Eggs
Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!
Second Grade
Physical Science
Activity
Throwing a Baseball
Activity
Throwing a Baseball
Fourth Grade
Life Science
With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.
Activity
Throwing a Baseball
Activity
Throwing a Baseball
With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.
Fourth Grade
Life Science
Activity
Get Cracking
Activity
Get Cracking
Second Grade
Engineering and Science Inquiry
Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.
Activity
Get Cracking
Activity
Get Cracking
Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.
Second Grade
Engineering and Science Inquiry
Activity
Do a Balloon Sandbag Science Experiment
Activity
Do a Balloon Sandbag Science Experiment
Fourth Grade
Physical Science
Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.
Activity
Do a Balloon Sandbag Science Experiment
Activity
Do a Balloon Sandbag Science Experiment
Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.
Fourth Grade
Physical Science
Activity
Crayon Rock Cycle Experiment
Activity
Crayon Rock Cycle Experiment
Third Grade
Engineering and Science Inquiry
Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?
Activity
Crayon Rock Cycle Experiment
Activity
Crayon Rock Cycle Experiment
Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?
Third Grade
Engineering and Science Inquiry
Activity
Easter Garden
Activity
Easter Garden
Second Grade
Earth and Space Science
Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.
Activity
Easter Garden
Activity
Easter Garden
Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.
Second Grade
Earth and Space Science
Activity
Create a Fossil!
Activity
Create a Fossil!
Second Grade
Life Science
This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.
Activity
Create a Fossil!
Activity
Create a Fossil!
This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.
Second Grade
Life Science
Activity
Seedy Situation
Activity
Seedy Situation
Fourth Grade
Engineering and Science Inquiry
Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.
Activity
Seedy Situation
Activity
Seedy Situation
Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.
Fourth Grade
Engineering and Science Inquiry
Activity
Streak Test
Activity
Streak Test
Second Grade
Engineering and Science Inquiry
In this science fair project, students use the streak test to tell minerals apart from each other.
Activity
Streak Test
Activity
Streak Test
In this science fair project, students use the streak test to tell minerals apart from each other.
Second Grade
Engineering and Science Inquiry
Activity
Golf Science Fair Project: Temperature and Rebound
Activity
Golf Science Fair Project: Temperature and Rebound
Third Grade
Measurement
The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.
Activity
Golf Science Fair Project: Temperature and Rebound
Activity
Golf Science Fair Project: Temperature and Rebound
The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.
Third Grade
Measurement
Activity
Easter Egg Designs
Activity
Easter Egg Designs
Third Grade
Earth and Space Science
Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.
Activity
Easter Egg Designs
Activity
Easter Egg Designs
Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.
Third Grade
Earth and Space Science
Activity
See Seeds Come to Life!
Activity
See Seeds Come to Life!
Second Grade
Measurement
Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!
Activity
See Seeds Come to Life!
Activity
See Seeds Come to Life!
Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!
Second Grade
Measurement
Activity
Delicious Classification: Vertebrates and Invertebrates
Activity
Delicious Classification: Vertebrates and Invertebrates
Fourth Grade
Life Science
Help your child learn about animal classification with this fun and delicious activity.
Activity
Delicious Classification: Vertebrates and Invertebrates
Activity
Delicious Classification: Vertebrates and Invertebrates
Help your child learn about animal classification with this fun and delicious activity.
Fourth Grade
Life Science
Activity
Bouncy Balls
Activity
Bouncy Balls
Fourth Grade
Engineering and Science Inquiry
This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.
Activity
Bouncy Balls
Activity
Bouncy Balls
This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.
Fourth Grade
Engineering and Science Inquiry
Activity
Mineral Streak
Activity
Mineral Streak
Fourth Grade
Engineering and Science Inquiry
In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.
Activity
Mineral Streak
Activity
Mineral Streak
In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.
Fourth Grade
Engineering and Science Inquiry
Activity
Seafloor Spreading Model
Activity
Seafloor Spreading Model
Fourth Grade
Engineering and Science Inquiry
In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.
Activity
Seafloor Spreading Model
Activity
Seafloor Spreading Model
In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.
Fourth Grade
Engineering and Science Inquiry
Activity
The Wonderful World of Weeds
Activity
The Wonderful World of Weeds
Fourth Grade
Engineering and Science Inquiry
This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.
Activity
The Wonderful World of Weeds
Activity
The Wonderful World of Weeds
This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.
Fourth Grade
Engineering and Science Inquiry
Activity
Air Science Experiment
Activity
Air Science Experiment
Fourth Grade
Physical Science
Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!
Activity
Air Science Experiment
Activity
Air Science Experiment
Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!
Fourth Grade
Physical Science
Activity
Glove In a Jar: Demonstration of a Closed System
Activity
Glove In a Jar: Demonstration of a Closed System
Kindergarten
Engineering and Science Inquiry
In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.
Activity
Glove In a Jar: Demonstration of a Closed System
Activity
Glove In a Jar: Demonstration of a Closed System
In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.
Kindergarten
Engineering and Science Inquiry
Activity
Echoes: How Sound Waves are Reflected and Absorbed
Activity
Echoes: How Sound Waves are Reflected and Absorbed
Fourth Grade
Engineering and Science Inquiry
Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.
Activity
Echoes: How Sound Waves are Reflected and Absorbed
Activity
Echoes: How Sound Waves are Reflected and Absorbed
Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.
Fourth Grade
Engineering and Science Inquiry
Activity
Dog Nose Prints
Activity
Dog Nose Prints
Fourth Grade
Engineering and Science Inquiry
Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!
Activity
Dog Nose Prints
Activity
Dog Nose Prints
Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!
Fourth Grade
Engineering and Science Inquiry
Activity
Does Music Help or Distract from Classroom Learning?
Activity
Does Music Help or Distract from Classroom Learning?
Fourth Grade
Engineering and Science Inquiry
This project examines whether playing music during class helps students learn or if it distracts students from learning.
Activity
Does Music Help or Distract from Classroom Learning?
Activity
Does Music Help or Distract from Classroom Learning?
This project examines whether playing music during class helps students learn or if it distracts students from learning.
Fourth Grade
Engineering and Science Inquiry
Activity
Erosion Experiment
Activity
Erosion Experiment
Second Grade
Engineering and Science Inquiry
Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.
Activity
Erosion Experiment
Activity
Erosion Experiment
Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.
Second Grade
Engineering and Science Inquiry
Activity
Candy pH
Activity
Candy pH
Fourth Grade
Engineering and Science Inquiry
Take a dive into the candy jar with this yummy science experiment.
Activity
Candy pH
Activity
Candy pH
Take a dive into the candy jar with this yummy science experiment.
Fourth Grade
Engineering and Science Inquiry
Activity
How to Press Flowers
Activity
How to Press Flowers
Pre-K
Earth and Space Science
April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!
Activity
How to Press Flowers
Activity
How to Press Flowers
April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!
Pre-K
Earth and Space Science
Activity
Changing the Period of a Pendulum
Activity
Changing the Period of a Pendulum
Fourth Grade
Engineering and Science Inquiry
Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.
Activity
Changing the Period of a Pendulum
Activity
Changing the Period of a Pendulum
Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.
Fourth Grade
Engineering and Science Inquiry
Activity
1
2
3