Search and filter clear explanations across everything we teach — reading, math, physics, study skills, and hands-on outdoor and kitchen projects.
Showing 45 concepts.
Using the surrounding words, sentences, and tone of a passage to determine the meaning of an unfamiliar word — or which sense of a familiar word the author intends.
An inference is a logical conclusion drawn from evidence in the text combined with your own reasoning — what the author implies without stating it outright.
The main idea is what a text is about; the theme is the deeper message about life or human nature the author conveys through it.
Tone is the author’s attitude toward the subject; mood is the feeling the reader experiences; diction is the word choice that creates both.
The three classical appeals a writer or speaker uses to persuade an audience: ethos (credibility), pathos (emotion), and logos (logic and evidence).
A thesis is a single sentence stating the main argument of an essay — a specific, debatable claim the rest of the paper sets out to prove.
The bridge from arithmetic to algebra: working confidently with fractions, decimals, percents, and negative numbers, mastering the order of operations, and meeting the first variables.
The core language of algebra: solving linear equations and inequalities, working with variables and expressions, and graphing lines.
The study of shapes, sizes, angles, and space — lines, triangles, and circles, area and volume, and logical proofs.
Algebra taken further: quadratic, polynomial, exponential, and logarithmic functions, plus more advanced equation-solving and graphing.
The mathematics of triangles and angles: the sine, cosine, and tangent ratios, the unit circle, and periodic (wave) functions.
The preparation for calculus: deep work with functions and their graphs, advanced trigonometry, and a first look at limits.
The mathematics of change: derivatives (instantaneous rates of change) and integrals (accumulated totals), both built on the idea of a limit.
A set of equations relating displacement, velocity, acceleration, and time for motion with constant acceleration.
The net force on an object equals its mass times its acceleration.
Work is force applied over a distance; kinetic energy is the energy of motion. Net work changes an object’s kinetic energy.
Momentum is mass in motion. In a closed system, total momentum stays the same before and after a collision.
The voltage across a resistor equals the current through it times its resistance.
A time-management method: work in focused 25-minute blocks separated by 5-minute breaks, with a longer break after every fourth block.
Breaking a large, vague task into small, concrete, do-able steps.
Studying by retrieving information from memory — testing yourself — rather than re-reading or highlighting.
Reviewing material at increasing intervals over time instead of cramming it all at once.
Assigning specific tasks to specific time slots on a calendar, and writing your to-dos down instead of holding them in your head.
Planting, tending, and harvesting plants — understanding what a seed needs to become a healthy plant: sun, water, soil, and time.
Turning food scraps and yard waste into rich soil by letting microbes break them down — nature's own recycling system.
Designing and building things by hand from wood — and sometimes setting them with cement — using simple tools, careful measuring, and safe technique.
The core habits every cook needs first: safe knife handling, clean hands and surfaces, and reading a recipe before you start.
Using heat and seasoning to turn raw ingredients into a finished dish — and learning to taste and adjust as you go.
Making breads, cakes, and pastries by combining ingredients in precise amounts and baking them — where careful measuring matters more than improvising.
Building a physical object layer by layer from a digital 3D model — the printer melts plastic filament and lays it down one thin slice at a time until the shape is complete.
Testing the laws of physics through hands-on experiments — measuring motion, forces, energy, and electricity, and comparing the results to theory.
A general hands-on workspace for running experiments safely — forming a hypothesis, testing it, and recording what happens, often with chemistry and measurement at the core.
Studying living things up close — using microscopes, dissection, and careful observation to explore cells, organisms, and how life works.
Exploring how substances combine and change — mixing, heating, and measuring chemicals to observe reactions, and recording the results precisely.
Making images with lines and shading — pencil, pen, or charcoal — by observing shapes, proportions, and the way light falls.
Applying color with brushes and paint — watercolor, acrylic, or oil — to build images through hue, value, and texture.
Shaping three-dimensional forms from clay by hand or on a wheel, then firing them so they harden into finished pottery.
Decorating or constructing fabric with a needle and thread — embroidery, sewing, and other stitch work.
Creating images or patterns by arranging and gluing small pieces — tiles, glass, or stone — onto a surface, then filling the gaps with grout.
Making fabric from yarn with a single hooked needle, pulling loops through loops to build up rows of stitches.
Building strength, flexibility, balance, and body control through exercises like rolls, handstands, and beam work — usually in a gym.
A team game where players score by shooting a ball through a raised hoop, moving it up the court by dribbling and passing.
A team sport where players move a ball using their feet and body — never the hands — to score in the opposing goal.
A paddle sport blending tennis, badminton, and ping-pong, played with a perforated plastic ball on a small court with a low net.
A team sport where two sides rally a ball over a high net, trying to ground it on the opponent's court within three touches.