Review Science Topics
Lesson preview: the Mini Lesson and Vocabulary are open to everyone. Guided practice, exercises, the parent checklist and the printable PDF worksheet come with full access (free 7-day trial or membership).
What you will learn
- 1Review key ideas from Living Things, Earth and Weather, Matter and Energy, and Human Body and Health
- 2Recall key facts and diagrams for each of the four science units
- 3Identify topics that need more practice before the Science Day Exhibition
Mini Lesson
Before the Science Day Exhibition you will review all four units from this year. This is your chance to check your understanding, fill in any gaps, and feel confident about everything you have learned.
Unit A — Living Things
- All living things show the same signs of life — they grow, eat, breathe, move, respond, and reproduce.
- Plants are producers: photosynthesis turns sunlight, water, and CO2 into sugar (food) and oxygen.
- Food chains flow from a producer to a primary consumer to a secondary consumer.
- Biodiversity is the variety of species; high biodiversity makes ecosystems more stable.
Unit B — Earth and Weather
- The water cycle: evaporation then condensation then precipitation then collection.
- Extreme weather: tornado (interior room), hurricane (evacuate coast), blizzard (stay indoors, keep warm).
- Weather is what happens day to day; climate is the pattern over many years.
Unit C — Matter and Energy
- Matter has three states: solid (fixed shape), liquid (takes the shape of its container), gas (spreads out).
- Heating and cooling change state: ice then water then water vapor.
- Sound is made by vibrations that travel as pressure waves to our ears.
- Magnets attract iron, nickel, and cobalt; opposite poles attract, like poles repel.
Unit D — Human Body and Health
- The heart pumps blood: right side then lungs then left side then body — in a continuous loop.
- A balanced plate: half fruits and vegetables, one quarter grains, one quarter protein, and dairy on the side.
- Sleep repairs muscles, stores memories, produces immune cells, and restores energy.
- Good hygiene — handwashing, brushing teeth, flossing — keeps germs from making you sick.
Words to know
Photosynthesis
Plants make sugar (food) and oxygen using sunlight, water, and CO2
e.g. a leaf producing food for the whole plant in the daytime
Evaporation
Liquid water turning into water vapor and rising into the air
e.g. a puddle disappearing on a hot day
Condensation
Water vapor cooling and turning back into tiny liquid droplets
e.g. clouds forming, or mist on a cold window
Magnetic
A material attracted by a magnet because it contains iron, nickel, or cobalt
e.g. an iron nail sticks to a fridge magnet
Enamel
The hard white outer layer of a tooth that protects it from decay
e.g. brushing twice a day keeps enamel strong
Immune
The body system that fights germs and keeps you from getting sick
e.g. your immune system is stronger after a good night’s sleep
Protein
A food group that builds muscles and helps the body grow and repair
e.g. chicken, fish, beans, and eggs
Biodiversity
The number and variety of living species in an ecosystem
e.g. a rainforest has very high biodiversity
For every unit, practice saying the big idea in one sentence — if you can explain it simply, you really understand it.
Unlock the full HSEA system for 7 days.
Add your first kid profile and your 7 days start: every lesson in every grade, saved progress for each child. Nothing to set up, no card required, nothing to cancel.
- ✓ All 1,880 lessons, Grades 1–6, every subject
- ✓ Profiles + saved progress for every kid
- ✓ Printable lessons with answer key