Search every subject world, from Preschool to Grade 12. The first five courses of every subject path are free.
8 courses
Science · Grade 2
Second graders become material detectives. They describe materials by observable properties (color, texture, hardness, flexibility, absorbency, sinking or floating), run tests to find those properties, classify the same objects in different ways using a clear sorting rule, and tell solids from liquids by whether they keep their own shape.
Science · Grade 2
Why are towels cotton and pot handles wood or plastic? Learners connect properties to purposes, then analyze data from material tests, including a simulation that heats one end of metal, wood and plastic spoons, to choose the best material for a job. Finally they take apart a block building and rebuild the same pieces into something new, discovering that small pieces can make many different objects.
Science · Grade 2
Heating and cooling change materials: ice melts, chocolate softens, eggs cook and paper burns. Learners sort these changes into ones that can be reversed (changed back) and ones that cannot, and practise building an argument with evidence: a claim, the observations that support it, and why those observations matter.
Science · Grade 2
Learners plan a fair plant investigation, changing only the hours of light, then measure and compare plant heights to show that plants need light and water to grow. They discover how wind, water and animals carry seeds to new places, and use a cotton-swab 'bee' model to show how animals move pollen between flowers so plants can make seeds.
Science · Grade 2
Forests, deserts, oceans and ponds are home to very different living things. Learners match plants and animals to habitats that meet their needs, then act like field scientists: they count how many different kinds of living things are found in each habitat, compare the numbers in tables and bar charts, and explain why some habitats hold a greater variety of life.
Science · Grade 2
Some changes to Earth's surface happen in minutes: a volcano erupts, an earthquake shakes, a landslide rushes downhill. Others take so long that no one could watch them happen, like a river carving a canyon. Learners sort Earth events by how fast they happen, place them on timelines, and use evidence from several sources (photos, measurements and eyewitness reports) to show that a change happened.
Science · Grade 2
Learners name the shapes of land (mountains, hills, valleys, plains, islands) and bodies of water (oceans, lakes, rivers, ponds), label them on a model, and read maps as flat models of Earth, finding oceans on a world map. Then they discover where Earth's water is: almost all of it in the salty oceans, some frozen as ice and snow, and only a little as liquid fresh water.
Science · Grade 2
Rain washes soil off a hillside, a river eats away at its bank, and wind blows sand dunes across a road. Learners explain how wind and water change the shape of land, explore engineering solutions (plants, rock walls, fences and rows of trees), and compare data from a model 'rainstorm' test to decide which solution best slows erosion, while thinking about tradeoffs such as cost and time.
