Physical Science

Seventh grade is the year physical science finally gets concrete. Students have spent earlier grades learning about matter and energy in fairly general terms, and now they’re ready for the actual machinery — atoms, equations, Newton’s laws, kinetic and potential energy, waves. This nine-week course gives them a structured path through the core ideas of middle school physical science without rushing past the parts that take a little time to sink in.

The course is aligned to NGSS for middle school physical science (MS-PS1 through MS-PS3). Week 1 introduces matter, states of matter, and physical and chemical properties. Week 2 zooms in on the atom — protons, neutrons, electrons, the difference between elements and compounds, and how to sketch simple molecular models. Week 3 picks up chemical reactions, equation balancing, and the conservation of mass, which is one of those rules that sounds obvious until a student tries to apply it. Week 4 brings in Newton’s three laws of motion and the difference between balanced and unbalanced forces — this is where physics starts to feel like physics. Week 5 covers speed, velocity, and acceleration, with practice reading distance-time graphs (which are harder than they look). Week 6 takes on kinetic and potential energy, including the calculations. Week 7 walks through conduction, convection, and radiation, plus the law of conservation of energy applied to real systems. Week 8 introduces waves — amplitude, wavelength, frequency, wave speed, and how sound and light each carry energy. Week 9 is a capstone that asks students to integrate the whole course and apply it to multi-concept scenarios.

Each week has five worksheets, full answer keys, and a printable PDF. Pacing is flexible. A five-day track does one worksheet a day. A three-day flex track uses worksheets 1, 3, and 5 to hit the core concepts when time is tight. Vocabulary is built into each worksheet so students aren’t expected to come in already fluent. Teaching tips are written for the parent who’s checking work, not standing at a whiteboard.

The thing about physical science at this age is that it’s where math and science finally start to talk to each other in earnest. A seventh grader who can calculate speed from a distance-time graph, balance a simple chemical equation, and trace energy through a transformation chain is doing real quantitative reasoning — the kind that pays off in every science course afterward. This course is built for the homeschool family that wants the rigor of a standards-aligned curriculum without a thousand-page textbook, the co-op that needs structured worksheets for a unit on physical science, or the public school family looking for solid supplemental practice. Honestly, the energy and forces weeks are where most students have their first real “oh, this is what physics is” moment. We tried to set that up carefully.