# \#csd-unit-3-lesson-15

**URL:** https://forum.code.org/tag/csd-unit-3-lesson-15/388.md

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## [U3L15 Puzzle 11](https://forum.code.org/t/u3l15-puzzle-11/12435)

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**Author:** [@michelle\_johnson](https://forum.code.org/u/michelle_johnson)\
**Replies:** 10\
**Last updated:** [December 4, 2019, 4:52am UTC](https://forum.code.org/t/u3l15-puzzle-11/12435 "2019-12-04T04:52:30Z")

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My students and I are confused about the first part of the instructions: Find the if statement that checks whether the sprite is on the ground, and look at the if statement inside of it that checks whether the user has…

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## [Unit 3, Lesson 15](https://forum.code.org/t/unit-3-lesson-15/22417)

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**Author:** [@leinerj](https://forum.code.org/u/leinerj)\
**Replies:** 12\
**Last updated:** [November 19, 2019, 2:14pm UTC](https://forum.code.org/t/unit-3-lesson-15/22417 "2019-11-19T14:14:34Z")

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When working with puzzle 11 and the frog velocity coding, my students unable to get the frog to stop moving, even with frog.velocityY = 0 set in the else portion of the if statement. Is this a glitch? all the other c…

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## [Why is the && block not available?](https://forum.code.org/t/why-is-the-block-not-available/14980)

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**Author:** [@koliner](https://forum.code.org/u/koliner)\
**Replies:** 1\
**Last updated:** [March 14, 2018, 4:32pm UTC](https://forum.code.org/t/why-is-the-block-not-available/14980 "2018-03-14T16:32:33Z")

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I thought that the && boolean block could be used instead of nested if statements. Why is that not available on this Puzzle? Thanks for any clarification!

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## [Using student created sprites from previous lessons](https://forum.code.org/t/using-student-created-sprites-from-previous-lessons/12832)

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**Author:** [@jfletcher1843](https://forum.code.org/u/jfletcher1843)\
**Replies:** 1\
**Last updated:** [December 7, 2017, 8:04pm UTC](https://forum.code.org/t/using-student-created-sprites-from-previous-lessons/12832 "2017-12-07T20:04:48Z")

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I had my students make a superhero scene at the beginning of Chapter 3. How can they access these same sprites (or the scene) so that they can use the velocity and rotation blocks? I know they can type it in, but some of…

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## [Pilot - U3L15 - Velocity](https://forum.code.org/t/pilot-u3l15-velocity/5907)

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**Author:** [@dani](https://forum.code.org/u/dani)\
**Replies:** 8\
**Last updated:** [March 24, 2017, 1:56pm UTC](https://forum.code.org/t/pilot-u3l15-velocity/5907 "2017-03-24T13:56:21Z")

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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 …