Accessible Chart Palette Builder – Online Data Visualization
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
UD5 Toolkit
- · New assignments each day automatically
Click two seats to swap · Click to lock
A classroom seating randomizer is an online tool that automatically assigns students to seats in a randomized manner. It helps teachers create fresh seating arrangements daily, promoting varied student interactions and preventing cliques from forming. Unlike manual methods, this digital tool ensures true randomness and saves valuable class preparation time.
The tool uses the current date as a seed for its randomization algorithm. This means each day generates a unique seating arrangement. You can also manually shuffle at any time for additional randomization. Locked seats remain fixed regardless of date changes, giving you full control over specific placements.
Yes! Each seat has a lock icon. Click the lock to pin a student to that seat. Locked seats are excluded from randomization, making this feature perfect for students who need designated seating due to IEP requirements, vision needs, or behavioral considerations.
The tool supports up to 15 rows × 15 columns (225 seats), which accommodates most classroom sizes from small groups to large lecture halls. Student names are stored locally in your browser for privacy and quick access.
Absolutely. All student rosters, seating arrangements, and locked seat preferences are automatically saved to your browser's local storage. When you return, everything is exactly as you left it—no account required and no data is sent to any server.
Yes! The Print button generates a clean, printer-friendly version of your seating chart. It automatically hides control panels and optimizes the layout for paper. You can post it on your classroom wall or keep it in your substitute teacher folder.
Simply click on the first student's seat (it becomes highlighted), then click on the second student's seat. The two students will instantly swap positions. You can also click an unassigned student from the list below and then click any occupied seat to replace that student.
When your student roster exceeds the total seat count, extra students appear in the "Unassigned Students" section below the seating chart. You can manually swap them into seats or increase your grid size to accommodate everyone.
Yes, the seating randomizer is fully responsive. On smartphones and tablets, the control panel stacks above the seating chart, and the seat grid scrolls horizontally when needed. All tap interactions are optimized for touchscreens.
The Fisher-Yates shuffle algorithm powers the randomization, which is a mathematically proven method for generating unbiased random permutations. The daily seed feature adds deterministic variety, while the manual shuffle uses JavaScript's cryptographically influenced Math.random().
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
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