$60 Million Free Curriculum Bets Science Learning Starts With Spectacle

Mark Rober is spending what he said will be $60 million to build Class CrunchLabs, a free science curriculum for teachers starting with grades three through eight. Some videos and lessons are already available, he said, and the rest is planned over the next four years. His declared end state is unusually explicit: every lesson plan, teacher training, and original classroom demo will cost “exactly zero dollars” and be “100 percent free for all teachers forever.”

The product he described is not just a video library. It includes high-production videos that introduce the science, ready-to-teach classroom slide decks, teacher training, and curated hands-on demos made from ordinary classroom materials. Rober’s stated goal is to give teachers resources students actually want to engage with, while keeping the teacher at the center of the classroom.

That commitment rests on a teaching model Rober has refined through 15 years of monthly science and engineering videos: get attention first, then attach the formal concept to the experience. His opening demonstration made the point in the language of pressure rather than pedagogy. Onstage, he used a two-liter bottle half-filled with liquid nitrogen, explaining that nitrogen gas occupies about 700 times the volume of liquid nitrogen. When expansion is trapped, pressure builds until the container fails. Inside a trash can, the bottle burst and sent ping pong balls upward.

The point was not the explosion itself. It was that the audience now had a physical referent for pressure. Rober described gas molecules crowding against the plastic walls until the bottle “lost the game of molecular red rover” and the gas rushed out. Because the trash can blocked the sides and bottom, the gas escaped upward, carrying the ping pong balls with it.

That same framework, he said, explains cannons firing cannonballs, Nerf blasters firing darts, T-shirt cannons firing shirts, and straws firing spitwads: build up pressure, suddenly release it in one direction, and put the projectile in the path.

The curriculum he announced is built to reproduce that sequence in classrooms: first the lean-forward moment, then the explanation. Rober connected the method to his YouTube work, where his channel page was shown with 75.1 million subscribers and where he said his videos have accumulated 16 billion views.

Rober’s criticism of conventional science instruction is not that equations are useless. He said directly that there is “a time and a place for equations.” His objection is to abstraction arriving before students have a reason to care.

He contrasted the liquid-nitrogen trash-can demonstration with a textbook-style treatment of the same domain. The slide shown on screen was headed “THERMODYNAMICS & GAS DYNAMICS” and “Section 12.4: Work and Energy in Ideal Gas Expansion,” with the prompt “Consider a rigid container of volume V.” Rober called that the kind of phrase that murders curiosity. “It’s a freaking trash can,” he said.

For a generation raised on TikTok and YouTube, science instruction has to begin with something that makes students lean forward. Rober calls that approach “hiding the vegetables”: embedding the formal lesson inside a problem, spectacle, or story students actually want to follow.

His examples came from his own videos. A lesson on the scientific method becomes a 15-ton Jell-O pool that someone can belly flop onto, with the six steps of the method worked into the process. A lesson on terminal velocity becomes a squirrel problem: squirrels, he said, are among the only mammals that can survive a fall from any height at terminal velocity, and a backyard obstacle course built to stop them from stealing birdseed gives them a reason to demonstrate the point.

The same logic applied to microcontrollers. After someone stole a package from his porch, Rober said he spent a year making what he called the world’s least boring microcontroller tutorial video: a bait package that appeared to contain headphones but instead used phones, cloud-uploaded video, glitter, and fart spray to create the glitter-bomb trap. He framed it as a “modern-day homage” to Home Alone, with Macaulay Culkin appearing as the thief.

Rober then pointed back to the room. When the glitter bomb was about to open, he said, nobody was looking down or checking a phone. That undivided attention, in his formulation, is “the most fertile brain soil.”

His theory of memory is simple: learning sticks better when attached to a visceral experience. He compared the difficulty of memorizing a dull equation with the ease of remembering every lyric to a song that mattered emotionally decades earlier.

Rober anchored the argument in his own schooling, crediting his high school statistics teacher, Mr. Malloy, as an example of what strong teaching does. Malloy, he said, was memorable not only for a Dr. Evil impression or better hair than Rober had at the time, but because he “made it matter.” One example was using statistics to predict where a rival soccer team would kick penalty shots. According to Rober, it worked.

The lesson he drew was broader than nostalgia. Good teachers attach emotion to learning. They hide the vegetables. Their impact is “immeasurable,” because students carry that influence into the world.

That admiration for teachers also set up the practical problem Rober wants to solve. He said he has long called middle school science teacher his dream job. Until then, he has spent the last two and a half years, with a team of about 50 people including what he called “some of the best science teachers in the country,” secretly building a full science curriculum.

The reason, he said, is that teachers are often poorly paid and still spend their own money on classroom resources “that totally suck.” The curriculum he described is meant to combine his video-driven attention strategy with materials teachers can use directly: high-production videos that demonstrate the science, ready-to-teach slide decks, teacher training, and curated classroom demos made, in Rober’s words, with “stuff they have lying around their classroom.”

One example shown in the materials was a wrench in an MRI machine, used to introduce invisible magnetic fields. Other visuals showed students balancing cups, throwing balloons, and participating in hands-on demonstrations. Rober’s stated goal is not to replace teachers with videos. “Together we teach the classroom,” he said, with the teacher becoming “the hero” as students engage in science and engineering they care about.

The curriculum was identified in visuals as Class CrunchLabs. Rober said it starts with grades three through eight. On-screen text described it as a “Full Science Curriculum Grades 3-8” and said it “Exceeds State Science Standards.” Rober’s emphasis, however, stayed on the experience: science class should be “super freaking fun.”

Rober presented Class CrunchLabs as both a pedagogical intervention and a large financial commitment. He said pilot teachers assigned to teach the lessons responded strongly: 95 percent said that, when the curriculum is complete, they would want it to be their full science curriculum. Rober attributed that result to the team’s ability to explain complicated things simply and to what he called 15 years of experience solving “the science motivation gap.”

The rollout is already partly underway, according to Rober. Some videos and lessons are available now, and the remainder is planned over the next four years. He called the effort “the most important thing I do my whole life.”

The final commitment was the price. Rober said the curriculum will cost $60 million to make, but his “official declaration” was that every lesson plan, teacher training, and original class demo will be free for all teachers forever. The final screen reinforced the phrase “100% Free Forever” while a plume of nitrogen vapor rose onstage.