Skills & TEKS · Grade 8

Skills & TEKS Alignment

For the featured breakout Launch Control — aligned to the 2021 Texas Essential Knowledge and Skills for Science (§112.28).

🎯 Misconceptions confronted

🚨 “mass disappears when fuel burns” (atoms only rearrange — in a sealed system mass is conserved); “a heavier rocket accelerates faster because it's bigger” (for a fixed force, more mass means less acceleration); and “amplitude and wavelength are the same thing” (amplitude is energy; wavelength is the crest-to-crest distance).

📋 Lock-by-lock alignment

Recurring themes: cause & effect, systems & models, energy & matter, scale/proportion/quantity, stability & change.

Lock	Skill / thinking move	TEKS (aligned to)	High-effect-size strategy
L1 · Sequence Prove conservation	Order a before → rearrange → after argument showing mass is conserved.	`8.6(E)` conservation of mass via rearrangement of atoms; `8.5(E)` matter is conserved in systems.	Concept mapping / sequencing (Hattie d≈0.64)
L2 · Multiple choice a = F ÷ m	Predict how added mass changes acceleration at a fixed force.	`8.7(A)` acceleration depends on net force and mass (Newton's Second Law).	Confronting misconceptions / worked examples (d≈0.57)
L3 · Evidence sort Conserved mass	Keep only evidence a sealed system conserves mass; exclude an off-topic fact.	`8.6(E)` conservation of mass; `8.1(B)` evidence-based reasoning; `8.2(D)` evaluate.	Classifying / sorting evidence (d≈0.60)
L4 · Word Wavelength	Name the crest-to-crest distance; relate frequency and wavelength.	`8.8(A)` amplitude, frequency & wavelength in transverse waves & the EM spectrum.	Feedback + transfer (d≈0.70–0.86)

🔧 STEM engineering design challenge

Pair the breakout with the hands-on Reaction in a Bag & Straw Rocket challenge — mass a sealed reaction before and after to prove conservation of mass, then vary a rocket's payload to test a = F ÷ m. Anchored in 8.6(E) / 8.7(A) plus engineering practices 8.1(B), 8.1(G), 8.2(B/D), 8.4(C).

🛠️ Open the STEM challenge →

🧩 The Grade 8 concept set

The More Grade 8 breakouts add one short activity per key concept: classifying matter (8.6A), acids & bases (8.6D), conservation of mass (8.6E), Newton's laws (8.7), waves & the EM spectrum (8.8), stars & galaxies (8.9), weather systems (8.10), carbon & climate (8.11), change in ecosystems (8.12), and cells & heredity (8.13).

🧑‍🏫 Teacher supports

Design every lesson for all learners: UDL supports (CAST v3.0), ELPS supports for emergent bilingual students, and a lesson-plan guide — each in all seven languages. See also the full standards correlation.

Standards are aligned to, not reproduced from, the official TEKS. Effect sizes from Hattie, Visible Learning.