Three Dimension Science

Phenomena students
figure out — not memorize

NGSS phenomenon-based assessments, sensemaking tasks, and bell ringers for grades 6–8. Built by a 24-year veteran science teacher. Aligned to OpenSciEd.

DCI SEP CCC
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Four ways to build three-dimensional thinkers

Every product starts with a phenomenon. Every question requires students to think — not recall. Every teacher key tells you what mistakes to expect.

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Assessments
Mid-unit and end-of-unit assessments for all 18 OpenSciEd units. MC + free response + modeling tasks. DCI/SEP/CCC tagged.
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Graph & Data Do-Nows
6 bell ringers per grade with original graphs, data tables, scatter plots, and histograms. Students read data — no recall.
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Phenomenon Tasks
Illustrated real-world scenes with scaffolded 1D→2D→3D questions. Students explain, model, and argue. InnerOrbit-style sensemaking.
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Lab Lockdown Escape Rooms
4-station data escape rooms. NOT vocabulary — students read graphs and pull code digits. Print, laminate, reuse forever.

What teachers are downloading

Every product includes student sheets, answer keys with rationale, common misconceptions, and look-fors. Student-Tested & Approved.

Grade 6 · 7 · 8
Phenomenon Sensemaking Tasks
6 illustrated real-world phenomena per grade. Scaffolded 1D→2D→3D. Students explain a store window mystery, why Iceland is splitting, how wolves changed rivers, and 15 more.
SensemakingScaffoldedIllustrated Scenes
$5.00 per grade View on TPT →
Grade 6 · 7 · 8
Graph & Data Do-Now Packets
6 bell ringers per grade with original figures. Bar charts, line graphs, scatter plots, histograms, data tables. Every question requires pulling specific data from a figure.
Bell RingersGraph LiteracyOriginal Figures
$5.00 per grade · $10 mega View on TPT →
Grade 6 · 7 · 8
Lab Lockdown Escape Rooms
4-station data escape rooms for end-of-year review. Students analyze graphs and figures to find a 4-digit code. NOT vocabulary — real data analysis. Runs in one class period.
ActivityEnd of YearPrint & Laminate
$5.00 per grade View on TPT →
All 18 OpenSciEd Units
Mid-Unit & End-of-Unit Assessments
Phenomenon-based assessments for every OpenSciEd unit, grades 6–8. MC + free response + modeling tasks. Full teacher keys with scoring rubrics and misconception guides.
AssessmentAll 18 UnitsPhenomenon-Based
$3.50–$5.00 each View on TPT →
Grade 6 · 7 · 8
FREE Do-Now Bell Ringers
One free phenomenon-based Do-Now for every OpenSciEd unit. Download, try it with your students, then come back for the full packets.
FreeBell RingerTry Before You Buy
FREE Download Free →
Grades 6–8 Complete
Grade-Level Bundles
Every assessment for an entire grade in one download. 6 units × 3 products each (Do-Now + Mid-Unit + End-of-Unit). The complete year of phenomenon-based assessment.
BundleFull YearBest Value
$20–$25 per grade View on TPT →
DR

Built by a teacher, for teachers

David Rosvally has taught middle school science for 24 years. He currently teaches 7th grade at Weston Middle School in Connecticut, where he uses OpenSciEd curriculum daily. Every product in this store was tested with real students in a real classroom before it was listed.

These aren't products built by someone who Googled "NGSS standards." They're built by someone who watches 12-year-olds struggle with graphs every day, who knows exactly which misconceptions show up on every topic, and who writes the teacher key based on the actual mistakes his own students make.

Student-Tested & Approved. Every single product.

24
Years Teaching
65+
Products
18
OpenSciEd Units
3
Grade Levels

What you won't find here

This store doesn't sell vocabulary matching, word searches, or multiple choice recall quizzes. Every product in this store follows three rules:

1
Phenomenon first. Every assessment opens with a real-world scenario, original figure, or illustrated scene. Students engage with the phenomenon before they see a single question.
2
Three-dimensional questioning. Every question is tagged DCI, SEP, or CCC. Students don't just know — they analyze, explain, model, and argue.
3
Teacher keys that actually help. Every answer key includes the correct response, the most common student misconceptions, and specific look-fors for grading. You know what mistakes to expect before you grade a single paper.

Ready to try it?

Start with a free Do-Now. See how your students respond. Then come back for the full packets.

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