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Density ColumnA graduated cylinder showing three liquids layered by density with objects floating or sinking at different levels based on their densitiesDensity ColumnLiquids and objects layer by density: densest at the bottomboltgrapecorkVegetable Oil0.92 g/mLWater1.0 g/mLHoney1.42 g/mLBolt (iron, 7.87 g/cm³) - sinks to bottomGrape (1.1 g/cm³) - sinks in water,floats on honeyCork (0.24 g/cm³) - floats on oilEach liquid and object settles at the level matching its density

Properties of Matter

Lesson Grade 6

Students learn to distinguish intensive properties (density, melting point, boiling point, solubility) from extensive properties (mass, volume, weight), calculate density using d = m/V, and understand how physical properties identify substances.

6.P.1.3 6.P.2.3

Speaking Mathematics Practice

Lesson Grade 6

A 15-question practice covering all three Speaking Mathematics intervention lessons: the language of operations, number relationships and place value, and the connection between fractions and decimals. Questions test vocabulary recall, conceptual understanding, and application across all key topics.

NC.6.NS.4 NC.6.RP.1 NC.6.EE.1 +2 more

Earth's Systems Unit Introduction: Earth's Layers and the Rock Cycle

Lesson Grade 6

A 45 minute unit introduction focused on Earth's internal layers and the rock cycle, including two check-your-understanding sections aligned to NC Grade 6 standards ESS.6.2.1 and ESS.6.2.3.

ESS.6.2.1 ESS.6.2.3
Magnetic Field Lines Around a Bar MagnetA bar magnet with field lines curving from the north pole around to the south pole, showing the field is strongest near the poles where lines are closest togetherMagnetic Field LinesSNLines closest together at the poles = strongest field. Lines spread apart = weaker field.Field lines goN → S

Magnetism and Electricity

Lesson Grade 7

Students explore the properties of magnets and magnetic fields, learn how electric current creates magnetism (Oersted's discovery), understand how electromagnets work and their advantages over permanent magnets, and discover real-world applications from electric motors to MRI machines.

7.P.1.4
Desert Ecosystem AdaptationsFour desert organisms with labeled adaptations showing how structural, behavioral, and physiological traits help survival in arid environmentsDesert Ecosystem: Adaptations for SurvivalCACTUSSpines: reduce water lossThick stem: stores waterShallow roots: capture rainStructural adaptationsSIDEWINDER RATTLESNAKESidewinding: efficient on sandHeat-sensing pits: finds preyCamouflage: blends with sandStructural + physiologicalROADRUNNERLong legs: fast runningUV-reflective beak: heat controlStructural + behavioralKANGAROO RATLarge ears: release heatEfficient kidneys: conserve waterNocturnal: avoids daytime heatStructural + physiological + behavioralEvery adaptation is the result of natural selection over many generations, not individual choice

Adaptation and Speciation

Lesson Grade 8

Students explore the three types of adaptations (structural, behavioral, physiological), learn how directional, stabilizing, and disruptive selection shape populations differently, trace the steps of speciation through geographic isolation, and survey adaptations across Earth's major biomes.

8.L.4.2 8.L.4.1
Position-Time Graph: Motion Shapes at a GlanceFour-segment position-time graph illustrating fast constant speed, slow constant speed, at rest, and returning to startMotion Shapes on a Position-Time Graph0153045600123456789101112Time (seconds)Position (meters)A: Fast constantspeed (10 m/s)B: Slow constantspeed (2 m/s)C: At rest(0 m/s)D: Returningto start (−12 m/s)

Forces and Interactions - Remix

Lesson Grade 7

A fast-paced review of the first three lessons covering motion description, forces and Newton's Laws, and energy and simple machines. Designed to get students caught up and re-oriented after absences.

7.P.1.1 7.P.1.2 7.P.1.3 +2 more
Unit Concept Map: The Complete StoryFlowchart connecting geological evidence to evidence for evolution to natural selection to genetic variation to adaptations to speciation to biodiversityThe Complete Story of EvolutionGEOLOGICAL EVIDENCE (L2)Rock layers, superposition, index fossils, datingrecordsEVIDENCE FOR EVOLUTION (L1)Fossils, anatomy, embryology, DNAexplained byNATURAL SELECTION (L3)Overproduction, variation, selection, inheritanceGENETIC VARIATIONMutation, sexual repro,gene flow (the fuel)producesADAPTATIONS (L4)Structural, behavioral, physiologicalcan lead toSPECIATION (L4)Geographic isolation → divergence → new speciesexplainsBIODIVERSITY OF LIFE ON EARTH~8.7 million species today, billions across 3.5 billion yearsSELECTION TYPESDirectional, stabilizing,disruptive4.6 billion years of geological and biological change, driven by one mechanism: natural selection

Biological Evolution: The Big Picture

Lesson Grade 8

Students synthesize all unit concepts by tracing the complete story of evolution from geological evidence through natural selection to adaptation and speciation, learn to build scientific arguments using the CER framework with the whale evolution case study, analyze integrated case studies (marine iguana, horse evolution), review all unit vocabulary, and explore why evolution matters today.

8.L.4.1 8.L.4.2 8.E.2.1 +1 more
The Speed TriangleA triangle formula tool showing how to rearrange the speed formula. Distance is on top, speed and time are on the bottom. Cover the variable you want to solve for and the remaining arrangement gives you the formula.The Speed TriangleCover the variable you want to find. The remaining letters show the formula.DdistanceSspeedxTtimeFind Speed:s = d / tFind Distance:d = s x tFind Time:t = d / sHow to use:Cover the letter you want to solve for.The remaining two letters show you the formula:side by side = multiply, top over bottom = divide.

Describing Motion

Lesson Grade 7

Students learn to describe motion using position, reference points, direction, and speed. They calculate speed using s = d/t, distinguish between constant, average, and instantaneous speed, and explore the difference between speed and velocity.

7.P.1.1

Unit Test - Matter and Its Interactions

Assessment Grade 8

A 50-question summative unit test covering atomic structure, classification of matter (elements, compounds, mixtures), periodic table organization, physical and chemical properties, physical and chemical changes, evidence of chemical reactions, endothermic and exothermic reactions, the Law of Conservation of Mass, balanced equations, open and closed systems, and photosynthesis as a real-world chemical reaction. Aligned to NC Standard Course of Study PS.8.1.

PS.8.1 PS.8.1.1 PS.8.1.2 +3 more

Biological Evolution - Remix

Lesson Grade 8

A fast-paced review of the first three lessons covering evidence for evolution, reading the rock record, and natural selection. Designed to get students caught up and re-oriented after absences.

8.L.4.1 8.L.4.2 8.E.2.1 +1 more

Unit Test - Earth's Systems

Assessment Grade 6

A 30-question summative unit test covering Earth's internal layers and their properties, the rock cycle and rock transformations, identification of common minerals and rock types, and plate tectonic boundaries. Aligned to NC Standard Course of Study grade 6 Earth Science standards.

6.ESS

Matter and Its Interactions Practice

Lesson Grade 6

A practice exercise covering properties of matter, states of matter and phase changes, and energy transfer. Students review key concepts and apply their understanding through a variety of question types.

6.P.1.2 6.P.1.3 6.P.2.2 +1 more

Biological Evolution Practice

Lesson Grade 8

A practice assessment covering three core topics from the Biological Evolution unit: reading the rock record (Law of Superposition, dating methods, index fossils, geologic time scale), natural selection (Darwin's four principles, genetic variation, fitness), and adaptation and speciation (three adaptation types, selection patterns, geographic isolation).

8.E.2.1 8.E.2.2 8.L.4.1 +1 more
Natural Selection in Four StepsFour panels showing how natural selection works using beetles on light ground: variation in color, bird predation as selection pressure, differential survival of camouflaged beetles, and inheritance producing more light beetles in the next generationNatural Selection in Action1. VARIATIONPopulation has a mix of traitsLight (6)Dark (4)2. SELECTION PRESSUREBird predator spots dark beetles easilyEaten!Eaten!Dark beetles visible on light ground3. DIFFERENTIAL SURVIVALCamouflaged beetles survive to reproduce5 light survived, 1 dark survivedSurvivors reproduce and pass traits4. INHERITANCENext generation: more light beetlesLight (8)Dark (2)Population has evolved!Over many generations, the proportion of light beetles increases because they survive and reproduce at higher rates

Natural Selection

Lesson Grade 8

Students learn how natural selection works through Darwin's four principles (overproduction, variation, selection, inheritance), explore the sources of genetic variation, study three real-world case studies (peppered moths, antibiotic resistance, Darwin's finches), and address common misconceptions about evolution.

8.L.4.2

Forces and Interactions Practice

Lesson Grade 7

A 15-question practice covering graphing motion, forces and Newton's laws, and magnetism and electricity. Designed to reinforce key concepts from Lessons 2 through 4 of the Forces and Interactions unit.

7.P.1.1 7.P.1.2 7.P.1.3 +1 more
Fallacies That Attack and DivertThree panels illustrating Ad Hominem (attacking the person instead of the argument), Straw Man (distorting and attacking a fake version of the argument), and Red Herring (changing the subject to avoid the real issue)Fallacies That Attack and DivertAD HOMINEM"Against the person"Good ArgumentAttacks the PERSONIgnores the ARGUMENT"You eat candy, so youropinion on healthy lunchesdoesn't count."Fix: Judge the argumenton its OWN merits.STRAW MAN"Distort, then attack"REALArgument(strong)FakeversionTwists the argumentinto something extreme,then attacks the fake"So you want to BANall technology?!" (Theyonly said 30-min limit.)Fix: Respond to whatwas ACTUALLY said.RED HERRING"Change the subject"The Actual Issue →FISH!Drags you off topic ↘Introduces unrelatedtopic to distract fromthe real question"Why no homework?""Well, I cleaned my room!"Fix: Stay focused onthe ORIGINAL question.All three avoid the actual argument — ask: "But what about the original point?"

Think for Yourself: Critical Thinking and Logical Fallacies

Lesson Grade 6, 7, 8

Students learn what critical thinking is and why it matters, explore eight common logical fallacies with vivid visual examples drawn from advertising, social media, and everyday conversations, and practice identifying flawed reasoning to become less vulnerable to manipulation and deception.

CCSS.ELA-LITERACY.RI.8.8 CCSS.ELA-LITERACY.SL.7.3

S8 - Q4 - Unit 1 Test

Assessment Grade 8

Unit test covering the rock record, natural selection, adaptation and speciation, taxonomy, and logical fallacies.

8.E.2.1 8.E.2.2 8.L.4.1 +2 more

S8 - Q4 - Unit 1 Review

Lesson Grade 8

Comprehensive review for the Q4 Unit 1 test covering the rock record, natural selection, adaptation and speciation, taxonomy, and logical fallacies.

8.E.2.1 8.E.2.2 8.L.4.1 +2 more