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Teaching tips, tool comparisons, and science diagram guides for STEM educators. Create better classroom materials with AI-powered diagram generation.
How to Create a Network Diagram: Types and Symbols
Learn how to create network diagrams for IT infrastructure. Covers logical vs physical diagrams, standard symbols, topology types, and real-world examples.
Okabe-Ito Palette Hex Codes for Python, R & CSS
Copy all 8 Okabe-Ito palette hex codes with RGB values and ready-to-use Python, R, MATLAB and CSS snippets for colorblind-safe scientific figures.
Best Free Diagramming Tools 2026: Draw.io & Mermaid
Compare the best free diagramming tools for flowcharts, UML, mind maps and research diagrams: Draw.io, Excalidraw, Mermaid, PlantUML, Miro, Canva and more.
Best Open-Source Diagramming Tools: Draw.io & Mermaid
Compare open-source diagramming tools for flowcharts, UML, whiteboards and docs: Draw.io, Excalidraw, Mermaid, PlantUML, Graphviz and self-hosted options.
Canva Venn Diagram Maker: Guide + Free Alternatives
Learn how to make a Venn diagram in Canva step by step, see its limitations, and explore the best free alternatives, including AI-powered tools.
How to Create a Sankey Diagram in Excel: Step-by-Step
Learn how to make Sankey diagrams in Excel using add-ins, manual workarounds, and dedicated tools. A step-by-step guide with templates and alternatives.