Physical Science

Fifth grade is where physical science gets real. Up to this point most kids have been told things — solids hold shape, liquids pour, salt dissolves — without ever being asked to explain why. The 5-PS1 standards are the first place in the curriculum that asks them to use a model (the particle model) to actually explain matter, and that’s the spine of this nine-week program. Five worksheets per week, full answer keys, a kitchen and a few measuring tools, and everything Common Core’s 5-PS1-1 through 5-PS1-4 expects a fifth grader to understand by the end of the year.

Week 1 starts with properties — the testable, observable things that distinguish one piece of matter from another. Color, hardness, magnetism, conductivity, solubility, density. Your child learns to describe a material in measurable terms instead of vague ones (“it’s pretty” gets retired early), and works through a mystery bag of five small objects identified by combining several property tests.

Weeks 2 through 4 build the particle model and put it to work. Week 2 introduces the model itself — particles moving slowly and packed together in solids, sliding past each other in liquids, flying around in gases — using three cups on a counter (ice, water, fresh steam) as the running example. Week 3 covers mixtures and solutions, including a worked case of separating a glass of muddy salt water back into mud, salt, and water using filtering and evaporation. Week 4 follows a single water molecule from ice to steam, asking your child to describe what’s happening to the particles at every change of state.

Conservation and Change (Weeks 5-6)

Week 5 is the conservation principle: nothing is lost when matter changes form. The sealed soda bottle experiment is the centerpiece — your child predicts and confirms that the scale reads the same before, during, and after the fizz. This is the foundation for everything in middle school chemistry. Week 6 introduces the harder distinction: when does change just rearrange existing matter (physical), and when does it produce something genuinely new (chemical)? Five small kitchen changes — cutting, melting, mixing, toasting, baking soda plus vinegar — let your child practice the four kinds of evidence chemists use to spot a real reaction.

Identification, Application, and Review (Weeks 7-9)

Week 7 puts seven weeks of property knowledge to work. A worked example walks through identifying a mystery metal using density, magnetism, and conductivity together — no single property is enough, but the combination acts like a fingerprint. Week 8 connects all of it to real life: kitchen chemistry, weather phenomena, environmental issues, and engineering design. Week 9 is cumulative review with a full final assessment covering all four 5-PS1 standards.

Each week’s worksheets are printable, parent-friendly, and built around real phenomena kids can actually observe. The pace is one worksheet per day for a five-day track, or three worksheets for a flex track if you need a lighter week. Full answer keys throughout, with notes that help an adult explain the particle model without a chemistry degree.