MathFun
Free, focused math practice for kids.
What is MathFun?
MathFun is a free web app for children, parents, teachers, and tutors to practice elementary math. Learners can answer questions online with instant checking, print worksheets with fold-away answer keys, and play two-player math battles. Practice includes integers, fractions, decimals, and grade-based quizzes. Printable worksheets support Letter and A4 paper and up to 10 pages. No account, ads, or paywall is required.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
When you're a younger founder, the one currency you have that the incumbents of your industry don't have is speed and urgency. When we chose to reposition ourselves, we're now in an industry where folks have been there for 15 to 20 years and they're going to move slower than us inherently because they're a larger company. You have that advantage.
Speed is the one currency incumbents in your industry do not have
Sean reframes 'pivoting into a crowded space' as actually being an advantage: a 12-person team can rewrite its entire positioning in weeks, while 20-year-old incumbents physically can't. Treat urgency as the moat that's structurally unavailable to bigger competitors.
We have a big editorial arm that writes not just about surf conditions and what's happening there, but we write a lot about news and other topics as well. Everything on the platform is really content.
Twin content engines — utility (spot reports) + editorial (news and stories)
Surfline runs two parallel content engines: utility content (per-spot surf reports and forecasts that drive SEO and habit-building) and editorial content (news, stories, gear reviews that build brand affinity within the surf community). Each serves a different need but they feed the same retained free audience.
There's a play for whatever you're stuck on.
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