If you are looking for a list of grade appropriate topics, here it is. There are many more than can be added but this is a basic list. Here is a printable as well in case you decide to make your own.

Materials

Identify properties of an object Compare properties of objects Compare properties of materials Identify materials in objects
Identify multiple materials in objects

States of matter

Classify matter as solid, liquid, or gas Identify solids, liquids, and gases Sort solids, liquids, and gases

Phase change

Change-of-state diagrams: solid, liquid, and gas Heating, cooling, and changes of state

Heat and thermal energy

Predict heat flow
Predict temperature changes
How is temperature related to thermal energy?

Physical and chemical change

Identify physical and chemical changes Compare physical and chemical changes

Mixtures

Identify mixtures

Force and motion

Identify pushes and pulls
How do balanced and unbalanced forces affect motion? How do mass and force affect motion?
Compare the speeds of moving objects

Electricity
Introduction to static electricity and charged objects

Magnets

Identify magnets that attract or repel Label magnets that attract or repel Compare strengths of magnetic forces

Classification

Identify living and nonliving things
Identify plants and animals
Identify mammals, birds, fish, reptiles, and amphibians Identify vertebrates and invertebrates

Animals

Read animal life cycle diagrams
Construct animal life cycle diagrams
Compare stages of an animal’s life cycle
Compare different animals’ life cycles
Benefits of group behavior: North American caribou Benefits of group behavior: African wild dogs Benefits of group behavior: leaf-cutter ants
Human organs and their functions

Plants

Classify fruits and vegetables as plant parts
Identify plant parts and their functions
How do plants make food?
Read and construct flowering plant life cycle diagrams How do flowering plants make new plants?

Traits

Observe and compare traits
What affects traits? Use observations to support a hypothesis

Adaptations

Introduction to adaptations
Animal adaptations: beaks, mouths, and necks Animal adaptations: feet and limbs
Animal adaptations: skins and body coverings

Heredity

Match offspring to parents using inherited traits
Identify inherited and acquired traits
Inherited and acquired traits: use evidence to support a statement Read a plant pedigree chart
Read an animal pedigree chart

Ecosystems

Identify ecosystems
Describe ecosystems
Identify roles in food chains
How does matter move in food chains? Interpret food webs

Rocks and minerals

Classify rocks and minerals by color, shape, and texture Identify minerals using properties
Identify rocks using properties
Classify rocks as igneous, sedimentary, or metamorphic

Fossils

Introduction to fossils
Compare fossils to modern organisms
Compare ancient and modern organisms: use observations to support a hypothesis

Weather and climate

Read a thermometer
Compare temperatures on thermometers
Collect and graph temperature data
What’s the difference between weather and climate? Weather and climate around the world
Weather or climate? Cite text
Use data to describe U.S. climates
Use data to describe world climates

Earth’s features

Water on Earth

Volcanoes Mountains Hills Forests Desert

Earth events

Classify changes to Earth’s surface
Find evidence of changes to Earth’s surface earthquakes
volcanic eruptions
erosion

Engineering practices

Solve problems using magnets
Evaluate multiple design solutions to prevent flooding
Identify the best design solution to prevent hurricane damage

Units and measurement

Choose units of time
Choose customary units of distance Choose metric units of distance Abbreviate time and length units Abbreviate mass and volume units