Spin through ideas. Spot the gaps.

Chief Clanker first got interested in knowledge graphs when Marble open-sourced its Skill Taxonomy. That was the first open-source knowledge graph in the room, and it looked cool enough to take and run with.

Before doing that, though, a graph has to pass a harder test: is it complete, and is it purpose-built for the student or group of students at hand?

So Chief Clanker built several history knowledge graphs from textbooks, book spines, and a TV series, then organized them with a shared era layout (Neolithic, Bronze Age, Iron Age, Middle Ages, and on). That made it easier to compare sources, contrast sequences, and spot gaps. Turns out it is quite easy to build something more robust than Marble has for history. Connections sits alongside them as the science and tech graph.

The reading comprehension graph is new: an interactive visualization of the Common Core State Standards (CCSS) for reading, organized by grade K–12 and strand. It helps parents and builders see which reading-comprehension skill paths an app could be built on.