Delta Learning Space

09/23/2026

Can you land the parabola on the target? 🎯
Our free Quadratics Tool turns graphing into a game. Slide a, h, and k until your curve lands
exactly on the target, then put what you did into words.
Inside:
✏ Shifting and stretching
🔁 Reflections
📐 Vertex form and standard form
🧩 Completing the square
🎮 6 rounds of Match the Curve
Teachers: use it as a warm-up, station, or review. It’s free, needs no account, and stores
nothing, so you can share the link with students without a second thought.
Students: think you can beat all 6 rounds?
💬 Comment QUADRATICS and I’ll send you the link!
📌 Save this for your quadratics unit.

09/07/2026

Your students can build all four macromolecules — and watch a water molecule leave every time a bond forms.
Flip one monomer in a glucose chain and starch becomes cellulose. Add one double bond to a fatty acid and butter becomes olive oil. Same monomers, one decision, completely different
molecule. That’s the thing students memorize as a list and rarely get to see happen.
The Macromolecule Builder covers carbohydrates, lipids, proteins and nucleic acids. Students write their own DNA strand, then build its complement and transcribe it. They design a stretch of protein to do a specific job. They assemble a membrane and find out why fish in cold water build theirs differently.
Free, no account, nothing installed. It runs in any browser including a Chromebook, tablet or phone. Nothing is recorded, stored or sent anywhere.
Teachers: there’s a printable worksheet and full answer key to go with it, also free.
Link: https://www.deltalearningspace.com/macromolecule-builder
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09/02/2026

Your body has about 6 feet of DNA packed into almost every cell, and it’s all built from one
repeating part. 🧬
A nucleotide is sugar, phosphate, and a base. That’s it! Everything else about DNA and RNA is
a variation of those three pieces.
Start with this nucleic acid read before learning about DNA replication, genetics, transcription
and translation.
Full post is on the blog: https://www.deltalearningspace.com/blog-collection/what-are-nucleic-acids-and-why-do-they-matter

Save this one for your macromolecules unit.

08/19/2026

Your ruler can’t read minds.
That paperclip measures 4.92 cm — but only “4.9” is certain. That last digit is your best
estimate, and everything after it is a guess. This is the whole reason significant figures exist:
they keep your answer honest about how good your tool actually was.
Swipe through for the counting rules, the two operation rules, and worked examples you can
use tomorrow.
The rule students forget most: trailing zeros only count when there’s a decimal point. 1200 has
two sig figs. 1200. has four.
Full post with practice problems is linked in my bio.
Which sig fig rule trips your students up the most? 👇

08/05/2026

Why doesn't oil mix with water? 🧬
That single property is what makes lipids so useful, and it's the reason every cell you've ever
seen under a microscope can hold itself together.
Lipids are the odd one out among the four major macromolecules. Carbohydrates are built from
monosaccharides, proteins from amino acids, nucleic acids from nucleotides. Lipids have no
true monomer. Instead, they're grouped by how they behave: if a molecule made by a cell won't
dissolve in water, it's a lipid.
The newest post on the blog covers what lipids are made of, how fats, steroids, and
phospholipids are built, and what each group actually does — from long-term energy storage to
the phospholipid bilayer that separates a cell from its environment. There's a section on
saturated vs. unsaturated fatty acids too, since that's where structure-determines-function really
clicks for students.
This is the third post in the macromolecules series, following carbohydrates and proteins.
Nucleic acids are next.
Read it here:
https://www.deltalearningspace.com/blog-collection/what-are-lipids-and-why-do-they-matter

08/05/2026

Oil and water refuse to mix — and that stubbornness is the whole reason your cells can exist.
🧬
Lipids are the one macromolecule that breaks the rules. Carbohydrates have monosaccharides.
Proteins have amino acids. Nucleic acids have nucleotides. Lipids? No true monomer at all.
They’re grouped by a single shared behavior: they don’t dissolve in water.
The new post breaks down all of it:
🔹 Why hydrocarbons repel water in the first place
🔹 Fatty acids, triglycerides, and ester linkages
🔹 Saturated vs. unsaturated — why one double bond turns a solid into a liquid
🔹 Steroids, cholesterol, and the phospholipid bilayer
Third post in the macromolecules series. Carbohydrates and proteins are already up, nucleic
acids coming soon.
Link in bio 🔗

biologyclass scienceteacher apbiology biologystudent teacherspayteachers ngss
sciencelessons stemeducation biochemistry cellbiology teacherresources
homeschoolscience biologynotes studentsuccess scienceeducation

07/29/2026

Your students can name all five atomic models. Can they explain why each one got replaced?

Dalton wasn't wrong, he was working with the evidence he had. Then cathode rays showed atoms had smaller pieces inside. Gold foil showed the positive charge was packed into a tiny center. Hydrogen's emission spectrum showed electron energy was quantized. Every model was replaced because the evidence demanded it.

Check out our graphic organizer that has students track the year, the discovery, the key experiment, AND how the model changed for each scientist. Available as a blank organizer, a cut-and-paste activity, and completed version. Pairs with our blog post, so it works as a reading day, a sub plan, or an intro-unit anchor.

Link in the comments 👇

Curious how everyone else handles this one — do you teach the models chronologically, or start
with the modern model and work backward?

07/29/2026

Dalton wasn’t wrong. He was working with the evidence he had. 🔬
Science is ever-changing and conclusions are built on evidence and research.
Every model on this carousel was replaced for a reason:
→ Cathode rays showed atoms had smaller pieces inside
→ Gold foil showed the positive charge was packed into a tiny center
→ Hydrogen’s emission spectrum showed electron energy was quantized
The models didn’t change because scientists kept failing. They changed because the evidence demanded it.
Swipe through the five models, then grab the graphic organizer to have students track the evidence alongside each one. [Link in bio 💙]

07/22/2026

The free resource library is finally live — and it's a home for everything.

I've spent the last few months rebuilding the resources page from the ground up, and the biggest change is this: every free download I offer now lives in one organized library instead of being scattered across old posts and email links.

Once you join our Member Library (it's free), you have access to all our free resources. You can download them now and keep them, no strings attached.

If you teach high school biology, chemistry, or math — or you're a student looking for study support — this one's for you.

👉 Browse the library: https://www.deltalearningspace.com/resources

01/26/2026

Struggling with significant figures? This short video breaks them down step by step with clear examples to help science students feel more confident with calculations. 🧪📏

Learn how to identify and apply significant figures correctly in chemistry, including counting sig figs and using them in addition, subtraction, multiplicati...