# \#csd-unit-3-lesson-4 **URL:** https://forum.code.org/tag/csd-unit-3-lesson-4/377.md [Latest](https://forum.code.org/latest.md) · [Categories](https://forum.code.org/categories.md) · [Tags](https://forum.code.org/tags.md) --- ## [Lesson Modification 20/21](https://forum.code.org/t/lesson-modification-20-21/33063)
**Author:** [@dominnr](https://forum.code.org/u/dominnr)\ **Replies:** 0\ **Last updated:** [August 10, 2020, 10:48pm UTC](https://forum.code.org/t/lesson-modification-20-21/33063 "2020-08-10T22:48:12Z")
These modifications are only applied to Principles??? Discoveries doesn’t? --- ## [Lesson 4, Level 13 - Free Play](https://forum.code.org/t/lesson-4-level-13-free-play/15520)
**Author:** [@kammie.dill](https://forum.code.org/u/kammie.dill)\ **Replies:** 9\ **Last updated:** [October 19, 2019, 12:08pm UTC](https://forum.code.org/t/lesson-4-level-13-free-play/15520 "2019-10-19T12:08:03Z")
I'm not a big fan of the "free play" levels in this curriculum. My students see it as optional and don't really do anything here. I would like to give them a picture or something to create here. Any ideas from someone… --- ## [Solution Sheets](https://forum.code.org/t/solution-sheets/26477)
**Author:** [@mpowens](https://forum.code.org/u/mpowens)\ **Replies:** 3\ **Last updated:** [May 1, 2019, 2:15pm UTC](https://forum.code.org/t/solution-sheets/26477 "2019-05-01T14:15:54Z")
I am teaching the CS Discoveries Unit for the first time. I have no training or support from the school system and no one else at my school teaches this. In my Coding 1 class, we use CS First which has Solution Sheets … --- ## [Parameter vs Property](https://forum.code.org/t/parameter-vs-property/22702)
**Author:** [@koliner](https://forum.code.org/u/koliner)\ **Replies:** 0\ **Last updated:** [November 28, 2018, 6:50pm UTC](https://forum.code.org/t/parameter-vs-property/22702 "2018-11-28T18:50:33Z")
Reviewing vocabulary from Unit 3 and wondering about the difference between Parameters and Properties. The definition for Parameter says and extra piece of information and uses the example of width or height. Are these… --- ## [Assessment for Lesson](https://forum.code.org/t/assessment-for-lesson/19489)
**Author:** [@emily.kosmack](https://forum.code.org/u/emily.kosmack)\ **Replies:** 7\ **Last updated:** [November 5, 2018, 3:56am UTC](https://forum.code.org/t/assessment-for-lesson/19489 "2018-11-05T03:56:26Z")
I’m sitting over here enjoying my students’ work and thought I’d share. After a few lessons, we’re ready for a summative project - I have them make a copy of this presentation and do their work on the first slide. (edit … --- ## [Rubber Duck Debugging](https://forum.code.org/t/rubber-duck-debugging/9297)
**Author:** [@groche](https://forum.code.org/u/groche)\ **Replies:** 2\ **Last updated:** [November 20, 2017, 4:24pm UTC](https://forum.code.org/t/rubber-duck-debugging/9297 "2017-11-20T16:24:08Z")
If you have students work through these puzzles independently, consider getting them rubber ducks! How a Rubber Duck Taught Me to Be a Better Programmer Rubber Duck Debugging --- ## [CSD Unit 3, stage 4, puzzle 17](https://forum.code.org/t/csd-unit-3-stage-4-puzzle-17/6876)
**Author:** [@susan.honsinger](https://forum.code.org/u/susan.honsinger)\ **Replies:** 5\ **Last updated:** [September 22, 2017, 4:47pm UTC](https://forum.code.org/t/csd-unit-3-stage-4-puzzle-17/6876 "2017-09-22T16:47:18Z")
I have a student working through Unit 3 solo, with a little help from me. We are both stumped by the opacity challenge here, and I would love to know what a solution looks like! --- ## [Pilot - U3L04 - Shapes and Randomness](https://forum.code.org/t/pilot-u3l04-shapes-and-randomness/7250)
**Author:** [@dani](https://forum.code.org/u/dani)\ **Replies:** 5\ **Last updated:** [May 14, 2017, 11:59pm UTC](https://forum.code.org/t/pilot-u3l04-shapes-and-randomness/7250 "2017-05-14T23:59:07Z")
Please leave any feedback, thoughts, or resources for the lesson here. As a reminder, good feedback has the following elements: description of your school and classroom context details on what went well when teaching …