Multiplication, fractions, measurement & geometry
Start →Forces, ecosystems, weather & simple machines
Start →Vocabulary, comprehension, grammar & main idea
Start →Communities, geography, economics & history
Start →Logic grids, math riddles & pattern recognition
Start →Flashcards, journal & goal setting
Start →Multiplication is a shortcut for repeated addition. If you have 4 groups of 6, that's 6 + 6 + 6 + 6 = 24, or simply 4 × 6 = 24.
If 6 × 4 = 24, then 24 ÷ 4 = 6 and 24 ÷ 6 = 4.
Test your times tables and division skills!
Competition-style problems to sharpen your problem-solving skills! These are harder than regular questions.
How many arithmetic problems can you solve in 60 seconds?
Take turns solving math problems with a friend. Who can get more right?
A fraction shows parts of a whole. The top number (numerator) tells how many parts you have. The bottom number (denominator) tells how many equal parts the whole is divided into.
You can place fractions on a number line between 0 and 1:
Comparing fractions with the same denominator: 2/4 < 3/4 because 2 parts < 3 parts.
Answer these fraction questions. You can type fractions like 1/2 or 3/4.
Perimeter is the distance around a shape. Add up all the sides!
Area is the space inside a shape. For rectangles: Area = length × width
The short hand shows the hour. The long hand shows minutes. Each number on the clock = 5 minutes.
We measure how heavy things are in grams (g) and kilograms (kg). 1 kg = 1,000 g. We measure liquids in liters (L) and milliliters (mL).
Solve these measurement problems!
You can divide shapes into equal parts. A circle split into 4 equal parts gives you fourths (each part = 1/4).
Test your knowledge of shapes!
One bonus brain-buster each day for extra stars!
Get a fresh word problem to solve!
A force is a push or a pull that can make things move, stop, or change direction.
Objects at rest stay at rest unless a force acts on them. A ball on the ground won't move until you kick it!
An ecosystem is a community of living things (plants, animals) and their environment (water, soil, sunlight).
A food chain shows how energy passes from one living thing to another:
Weather is what's happening outside right now (sunny, rainy, snowy). Climate is the usual weather in a place over a long time.
Simple machines help us push, pull, or lift things with less effort:
Materials: A flat board or book, a stack of books, toy cars or balls of different weights
Stack some books to make a ramp. Place the board leaning against the stack.
Roll a light object (like a marble) down the ramp. Measure how far it goes.
Roll a heavier object (like a toy car). Measure how far it goes.
Change the ramp height and try again! What happens?
💡 Why it works: Gravity pulls objects down the ramp. A steeper ramp means more speed! Heavier objects have more momentum, so they often roll farther. This demonstrates gravity, friction, and inclined planes!
Write your observations:
When you see a word you don't know, look at the words around it for clues about its meaning.
Use context clues to figure out word meanings!
The Amazing Octopus
The octopus is one of the most fascinating creatures in the ocean. It has eight long arms, each covered with hundreds of suction cups. These suction cups help the octopus taste, smell, and grip things. An octopus has three hearts and blue blood!
One of the octopus's most amazing abilities is camouflage. It can change its skin color and texture in less than a second to match its surroundings. This helps it hide from predators like sharks and eels. Some octopuses can even make their skin look bumpy like coral or smooth like sand.
Octopuses are also incredibly intelligent. Scientists have watched them open jars, solve mazes, and use tools. In aquariums, they have been known to escape their tanks, crawl across the floor, and climb into other tanks to steal food!
When an octopus feels threatened, it can squirt a cloud of dark ink to confuse predators and escape. It can also squeeze through tiny spaces because it has no bones — its entire body is soft and flexible. An octopus can fit through any opening large enough for its beak (the only hard part of its body).
Sadly, most octopuses live only 1 to 2 years. But in that short time, they are some of the most clever and adaptable animals on Earth.
Answer questions about the octopus passage.
Identify the main idea and supporting details.
Test your knowledge of parts of speech and punctuation!
Write a short paragraph (3-5 sentences) about your favorite animal. Include at least 2 adjectives and 1 adverb!
People live in different types of communities:
Match descriptions to the right type of community!
The United States has 50 states. Here are some key facts:
People and countries trade because no one can make everything they need. Trading lets everyone get what they want!
If you could visit any community in the world (urban, suburban, or rural), where would you go and why? Write 3-4 sentences.
Read the clues carefully. Use elimination — cross out what CAN'T be true, and what's left must be the answer!
Tip: Be patient. Read ALL clues before jumping to conclusions!
Use the clues to figure out the answer!
Math riddles ask you to use numbers in creative ways. Look for patterns and hidden information.
Solve these tricky number puzzles!
A pattern is something that repeats in a predictable way. Look for what changes each step.
What comes next in the pattern?
Deduction means using facts and clues to figure out the answer. Read each clue carefully!
Use the clues to figure out the answer!
Pick a concept to learn. Lessons explain the idea, walk you through examples, and check your understanding.
Review the questions you got wrong. Click a card to flip it!
One thing I learned in Math:
One thing I learned in Science:
One thing I learned in Reading:
One thing I learned in Social Studies:
One thing I learned in Brain Puzzle:
One thing I thought was cool:
One thing I still wonder about:
What topic do you want to explore more?