Editable Resources for ELA, Math, and Science
I teach college science and build the tools I wish I’d had. Lesson bundles on Teachers Pay Teachers, faster grading with Scorae, and classroom insight with ClassSense.
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Over 5,000 teaching resources across ELA, Math, and Science.
Built by Corey Christen, PhD, who teaches biology and anatomy & physiology to college students across the United States.
Why this exists
Most teaching resources are written by people who left the classroom
And it shows. The lesson plans assume a class that behaves. The professional development assumes time you don’t have. I’m still teaching, so when I say a lesson structure holds up under pressure, it’s because I’ve watched it hold up — or watched it fail and rebuilt it.
Three things I actually build
The resource library is the biggest of them, but the other two are where the time savings really come from. Have a look:
Lesson bundles on TpT
Over 5,000 editable, standards-aligned resources for ELA, Math and Science — worksheets, unit bundles and assessments you can adapt rather than start from scratch.
Scorae — grading, minus the weekend
Fast, evidence-based grading that works wherever you already grade, with a Chrome extension and free rubrics. There’s a free plan. Check out Scorae →
ClassSense
Turns your curriculum into adaptive, game-based lessons that grade themselves — so the marking doesn’t follow you home. Built by a teacher, for the same reason as everything else here. Check out ClassSense →
Where these courses come from
I teach biology and anatomy & physiology to college students across the United States. Every course here started as something that wasn’t working in my own classroom — students who wouldn’t ask questions, lessons that collapsed the moment a schedule shifted, assessments that measured recall and called it thinking.
What’s in these courses is what worked. Not theory I read about, but practice I rebuilt until it held up in front of real students, semester after semester.
What teachers say after going through this professional development:
“This was the first professional development in years that actually gave me energy instead of draining it. I appreciated that the focus wasn’t on doing more—it was about teaching smarter, protecting my well-being, and rediscovering why I became an educator in the first place.”
Veteran 4th Grade Science Teacher, Title I School
“The science literacy strategies were immediately applicable. I walked away with classroom-ready ideas that encouraged my students to think like scientists, ask better questions, and engage more deeply with scientific concepts without requiring a complete curriculum overhaul.”
Middle School STEM Department Chair, Grades 6–8
“I appreciated how this course balanced evidence-based practices with the realities of today’s classroom. It acknowledged the challenges teachers face while providing practical tools for reducing burnout, building resilience, and creating meaningful science learning experiences. I left feeling hopeful, equipped, and excited to return to my classroom.”
High School Biology & Environmental Science Teacher
Take those for what they are — other people’s words. The better test is the teaching itself, so the first lesson of every course is free to read. No signup, no card, no trial clock. Read one and judge it for yourself.
Professional development that respects your time
Five self-paced courses, six sections each, built out of problems from my own classroom. Every one opens its first lesson free — no signup, no card — and finishing any of them generates a printable certificate for your PD records.
Curiosity as a Skill
Why “be curious” is bad advice, and the moves that build curiosity in students who seem to have none.
18 lessons · $79 — first lesson free to read
Science Is a Way of Thinking
Past the scientific-method poster: evidence evaluation, model revision and productive failure.
18 lessons · $79 — first lesson free to read
Designing Lessons That Won’t Collapse Under Pressure
Why lessons fail, and how to build ones that survive a disrupted schedule.
18 lessons · $79 — first lesson free to read
Assessments That Actually Measure Thinking
Scenario-based items, the craft of a good distractor, and what your tests really measure.
18 lessons · $79 — first lesson free to read
The Anti-Burnout Kit for New and Seasoned Teachers
Burnout is structural, not a character flaw. Workload, boundaries and sustainable scheduling.
18 lessons · $79 — first lesson free to read
Questions teachers actually ask
If yours isn’t here, just ask me.
What subjects do the resources cover?
ELA, Math and Science, mapped to state and national standards. Science runs deepest — biology, physics and earth science — because that’s what I teach.
Are the teaching materials editable?
Yes. Every resource is editable, because no lesson survives first contact with someone else’s class unchanged.
How can I save time using these resources?
The bundles remove the blank-page problem for a whole unit at once. Scorae takes the other half — the grading pile that eats your Sunday.
Is there support for using these materials?
Yes — email me directly, or take one of the professional development courses. The first lesson of each is free to read.
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Latest lesson bundles
Standards-aligned science materials, added regularly.
- High School Earth Science: Human Impact, Sustainability & Engineering Solutions — Complete Unit GuideResources, hazards, climate models and engineering design — the unit where students have the strongest opinions and the weakest criteria.… Read more: High School Earth Science: Human Impact, Sustainability & Engineering Solutions — Complete Unit Guide
- High School Earth Science: Weather, Climate & Plate Tectonics — Complete Unit GuidePlate tectonics, convection, the water and carbon cycles, and climate — the unit where every idea turns out to be… Read more: High School Earth Science: Weather, Climate & Plate Tectonics — Complete Unit Guide
- High School Earth Science: Solar System & Geologic Time — Complete Unit GuideThe sun, the origin of the elements, orbital motion and deep time — and why “the Big Bang was an… Read more: High School Earth Science: Solar System & Geologic Time — Complete Unit Guide
- High School Physics: Waves & the Electromagnetic Spectrum — Complete Unit GuideWave properties, the electromagnetic spectrum, and digital information — plus why the microscope you were sold on magnification probably cannot… Read more: High School Physics: Waves & the Electromagnetic Spectrum — Complete Unit Guide
- High School Physics: Energy Transfer & Conservation — Complete Unit GuideEnergy transfer, conservation and the second law — and how to teach “energy is never lost” to students who can… Read more: High School Physics: Energy Transfer & Conservation — Complete Unit Guide
- High School Physics: Forces & Motion — Complete Unit GuideNewton’s laws, momentum and collision design — and the 2,000-year-old intuition that every physics class has to dismantle first. Every… Read more: High School Physics: Forces & Motion — Complete Unit Guide