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phetsims/normal-modes

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"Normal Modes" is an educational simulation in HTML5, by PhET Interactive Simulations.

Is phetsims/normal-modes beginner-friendly?

We have not seen enough recent pull requests from first-time contributors to phetsims/normal-modes to say how often they are merged. No beginner-friendly issue is open right now; the list below has the other issues we hold for it.

Stars
0
Forks
2
Open beginner issues
0
Indexed issues
25
Dominant language
JavaScript
License
GPL-3.0
Last GitHub push
Apr 20, 2026
Latest indexed
Sep 21, 2026
No contributing guide
No code of conduct
Beginner labels
No beginner labels indexed
No merged PRs in 30d

How to contribute to phetsims/normal-modes

  1. There is no contributing guide, so start from the README and a few recently merged pull requests to see how changes are proposed.
  2. Your contributions will be published under the project's GPL-3.0 license.
  3. Follow the repository to hear when a new beginner-friendly issue opens, or look through the other issues below.
Beginner friendly Everything
Open All

Issues somebody may already be working on are listed last. List everything by date

  • Convert to TypeScript
    Open
    • Is something wrong?
    dev:typescript priority:5-deferred

    Difficulty 5/5 Over a week Newbie friendliness 15/100

    phetsims/normal-modes#92 ·

  • Support Dynamic Locale
    Open
    • Is something wrong?
    status:blocks-sim-publication

    Difficulty 1/5 Under an hour Newbie friendliness 55/100

    phetsims/normal-modes#90 ·

  • Misleading names for "number of masses"
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 2/5 1-3 hours Newbie friendliness 58/100

    phetsims/normal-modes#89 ·

  • Amplitude display does not change when mass is held in place
    Open
    • Is something wrong?
    priority:5-deferred type:bug type:multitouch

    Difficulty 3/5 1-2 days Newbie friendliness 42/100

    phetsims/normal-modes#87 · 1 comment ·

  • Masses briefly stop moving when switching between vertical and horizontal normal modes
    Open
    • Is something wrong?
    priority:5-deferred type:performance

    Difficulty 3/5 1-2 days Newbie friendliness 42/100

    phetsims/normal-modes#84 · 1 comment ·

  • Multitouch support
    Open
    • Is something wrong?
    priority:5-deferred type:multitouch

    Difficulty 5/5 Over a week Newbie friendliness 20/100

    phetsims/normal-modes#80 ·

  • Mass position may be incorrect when amplitude is increased while sim is paused
    Open
    • Is something wrong?
    priority:5-deferred type:bug

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    phetsims/normal-modes#78 · 5 comments ·

  • Portions of frequency values remain after collapsing accordion box
    Open
    • Is something wrong?
    priority:5-deferred type:bug

    Difficulty 3/5 1-2 days Newbie friendliness 35/100

    phetsims/normal-modes#73 · 3 comments ·

  • Suggest amplitude control changes
    Open
    • Is something wrong?
    priority:5-deferred type:bug type:suggestion

    Difficulty 4/5 3-5 days Newbie friendliness 25/100

    phetsims/normal-modes#71 · 2 comments ·

  • Tandems should be passed via options.
    Open
    • Is something wrong?
    dev:phet-io

    Difficulty 3/5 1-2 days Newbie friendliness 45/100

    phetsims/normal-modes#70 ·

  • Normal Modes - Publish 1.0
    Open
    • Is something wrong?
    priority:5-deferred type:epic

    Difficulty 5/5 Over a week Newbie friendliness 10/100

    phetsims/normal-modes#60 · 2 comments ·

  • change requests
    Open
    • Is something wrong?
    design:general

    Difficulty 5/5 Over a week Newbie friendliness 15/100

    phetsims/normal-modes#57 · 7 comments ·

  • CT: Assertion failed: recalculateVelocityAndAcceleration ...
    Open
    • Is something wrong?
    priority:5-deferred status:blocks-sim-publication type:automated-testing

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    phetsims/normal-modes#56 · 14 comments ·

  • does this sim do any memory management?
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 5/5 Over a week Newbie friendliness 15/100

    phetsims/normal-modes#51 · 2 comments ·

  • sim fails with shuffleListeners
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 4/5 3-5 days Newbie friendliness 25/100

    phetsims/normal-modes#50 ·

  • magic numbers
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 3/5 1-2 days Newbie friendliness 35/100

    phetsims/normal-modes#38 ·

  • address TODO comments or promote to GitHub issues
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    phetsims/normal-modes#37 ·

  • performance testing
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 25/100

    phetsims/normal-modes#33 ·

  • review pointer areas
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 30/100

    phetsims/normal-modes#31 ·

  • opportunities for more use of validation options
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    phetsims/normal-modes#29 ·

  • missing overview documentation in .js files
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    phetsims/normal-modes#27 · 2 comments ·

  • no use of assert
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 4/5 3-5 days Newbie friendliness 25/100

    phetsims/normal-modes#24 · 3 comments ·

  • credits
    Open
    • Is something wrong?

    Difficulty 2/5 1-3 hours Newbie friendliness 45/100

    phetsims/normal-modes#19 · 7 comments ·

  • sim fails stringTest
    Open
    • Is something wrong?
    dev:code-review

    Difficulty 3/5 1-2 days Newbie friendliness 45/100

    phetsims/normal-modes#10 ·

  • Normal Modes Main checklist
    Open
    • Is something wrong?
    project:sim-checklist

    Difficulty 5/5 Over a week Newbie friendliness 15/100

    phetsims/normal-modes#1 ·

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