# U2 Challenge Decisions **URL:** \ **Category:** Unit 2 Best Practices\ **Created:** [September 11, 2015, 2:47am UTC](https://forum.code.org/t/u2-challenge-decisions/2098 "2015-09-11T02:47:56Z")\ **Posts on this page:** 20\ **Page:** 11
**Author:** ![jennifer\_bearce](https://avatars.discourse-cdn.com/v4/letter/j/c5a1d2/32.png) [@jennifer\_bearce](https://forum.code.org/u/jennifer_bearce)\ **Post date:** [February 14, 2016, 3:36pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/204 "2016-02-14T15:36:23Z")
I will be working on the binary lesson (Days 10 - 12) ---
**Author:** ![pkantack](https://avatars.discourse-cdn.com/v4/letter/p/91b2a8/32.png) [@pkantack](https://forum.code.org/u/pkantack)\ **Post date:** [February 17, 2016, 4:22am UTC](https://forum.code.org/t/u2-challenge-decisions/2098/205 "2016-02-17T04:22:11Z")
I would be working on Day 17 with the minimal spanning tree lesson. My plan is to have them complete the Muddy City project and then I plan to have them complete a similar project. My idea is to have them plan the shortest distance from our school to a popular destination such as the mall. They will need to look at different routes and take into account obstacles, speed limits, weather, etc. ---
**Author:** ![james\_gundlach](https://avatars.discourse-cdn.com/v4/letter/j/958977/32.png) [@james\_gundlach](https://forum.code.org/u/james_gundlach)\ **Post date:** [February 19, 2016, 1:12am UTC](https://forum.code.org/t/u2-challenge-decisions/2098/206 "2016-02-19T01:12:23Z")
I will be working on the linear and binary search lesson. [Google Slides Day 13-14 Binary and Linear Search](https://docs.google.com/presentation/d/1jUg8P147BqpKl_EV3VXfMTXzH76ZqQJtWab42b3I9Vg/edit?usp=sharing) ---
**Author:** ![slberr1](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@slberr1](https://forum.code.org/u/slberr1)\ **Post date:** [February 22, 2016, 6:27pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/207 "2016-02-22T18:27:09Z")
I will be doing the lesson on Binary. ---
**Author:** ![anmrobnott](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.code.org/anmrobnott/32/505_2.png) [@anmrobnott](https://forum.code.org/u/anmrobnott)\ **Post date:** [February 23, 2016, 12:22am UTC](https://forum.code.org/t/u2-challenge-decisions/2098/208 "2016-02-23T00:22:24Z")
@james_gundlach I like the color/food activities! I wonder what would happen if the lesson started with the unplugged activity and then went to real-world applications. ---
**Author:** ![heather\_krissel](https://avatars.discourse-cdn.com/v4/letter/h/d78d45/32.png) [@heather\_krissel](https://forum.code.org/u/heather_krissel)\ **Post date:** [March 5, 2016, 4:33pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/209 "2016-03-05T16:33:45Z")
Day 10 - 12 - Binary ---
**Author:** ![cjfattig](https://avatars.discourse-cdn.com/v4/letter/c/eada6e/32.png) [@cjfattig](https://forum.code.org/u/cjfattig)\ **Post date:** [March 14, 2016, 2:20am UTC](https://forum.code.org/t/u2-challenge-decisions/2098/210 "2016-03-14T02:20:50Z")
I hope this is the right place to post this. This is the second time I’ve taught this lesson, and I added a few things to my activities. I made a SmartBoard activity that uses the “fipper” tiles with binary dots on them for the students to play with. I have a couple of students who can’t sit still an entire class period, so this is a good opportunity to have them get up and do something productive instead of wandering aimlessly. I can send the file to anyone who would like it. Send me an email if you are interested. [Binary Lesson 1-Pager](https://docs.google.com/document/d/1WnC8twxQ8oevhDR4I3n8CV-_yYt8xyuas2ua1UFM5to/edit?usp=sharing) My two resources are the video “[Binary Numbers and Base Systems as Fast as Possible](https://www.youtube.com/watch?v=LpuPe81bc2w)” (from 0:00-3:45) which I added to my lesson, as well as my SmartBoard flipper game. I am uncertain as to what my “artifact” should be. ---
**Author:** ![mmosier](https://avatars.discourse-cdn.com/v4/letter/m/ba9def/32.png) [@mmosier](https://forum.code.org/u/mmosier)\ **Post date:** [March 21, 2016, 11:13am UTC](https://forum.code.org/t/u2-challenge-decisions/2098/211 "2016-03-21T11:13:06Z")
I intend to work on the Binary lesson plan spanning days 10 thru 12. I am currently working on modifying the lesson plan to allow students to act out a dialog in groups using themselves as binary digits to represent quantities. I am currently working alone, and OK with that. ---
**Author:** ![anmrobnott](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.code.org/anmrobnott/32/505_2.png) [@anmrobnott](https://forum.code.org/u/anmrobnott)\ **Post date:** [March 22, 2016, 5:32pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/212 "2016-03-22T17:32:32Z")
The cK-12 website looks very interesting. Thanks for the inforamtion. ---
**Author:** ![jac4171](https://avatars.discourse-cdn.com/v4/letter/j/df705f/32.png) [@jac4171](https://forum.code.org/u/jac4171)\ **Post date:** [March 27, 2016, 11:40pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/213 "2016-03-27T23:40:30Z")
I will implement Day 17 the Minimal spanning trees. This activity is useful to find the best possible solutions and to avoid redundancy[Minimal Spannig Trees - Costanza.docx](https://forum.code.org/uploads/short-url/tZfyF232ZMLoOtvTfeMUrUU8onl.docx) (28.0 KB) . ---
**Author:** ![kevinsukhoo](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.code.org/kevinsukhoo/32/3617_2.png) [@kevinsukhoo](https://forum.code.org/u/kevinsukhoo)\ **Post date:** [March 29, 2016, 11:34pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/214 "2016-03-29T23:34:00Z")
@jac4171, I really like your real-world connection between minimal spanning trees and your local museums. ---
**Author:** ![adriana\_delap](https://avatars.discourse-cdn.com/v4/letter/a/5daacb/32.png) [@adriana\_delap](https://forum.code.org/u/adriana_delap)\ **Post date:** [March 31, 2016, 5:27pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/215 "2016-03-31T17:27:05Z")
I will be working with day 10-12 Binary. ---
**Author:** ![adriana\_delap](https://avatars.discourse-cdn.com/v4/letter/a/5daacb/32.png) [@adriana\_delap](https://forum.code.org/u/adriana_delap)\ **Post date:** [April 1, 2016, 12:17pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/216 "2016-04-01T12:17:31Z")
[Challenge Unit 2.docx](https://forum.code.org/uploads/short-url/j3Qdtff2ojD9l3ZK46SkMdhPpwf.docx) (23.5 KB) This is Day 10-12 Binary ---
**Author:** ![jmmoran](https://avatars.discourse-cdn.com/v4/letter/j/8e8cbc/32.png) [@jmmoran](https://forum.code.org/u/jmmoran)\ **Post date:** [April 13, 2016, 8:02pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/217 "2016-04-13T20:02:51Z")
I will be doing Day 16-15 Sorting Algorithems ---
**Author:** ![mhisel](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@mhisel](https://forum.code.org/u/mhisel)\ **Post date:** [April 18, 2016, 8:03pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/218 "2016-04-18T20:03:25Z")
I am doing the cornrows challenge ---
**Author:** ![david\_burnham](https://avatars.discourse-cdn.com/v4/letter/d/4af34b/32.png) [@david\_burnham](https://forum.code.org/u/david_burnham)\ **Post date:** [April 19, 2016, 11:56am UTC](https://forum.code.org/t/u2-challenge-decisions/2098/219 "2016-04-19T11:56:59Z")
I did an applications in binary numbers lesson where I created a scavenger hunt with binary numbers to encode a message. I then had the students encode an image using rows of 8 bit binary numbers. The kids enjoyed the lesson and I think it helped them understand the importance of binary to a computer. ---
**Author:** ![lamberto\_roscioli](https://avatars.discourse-cdn.com/v4/letter/l/6bbea6/32.png) [@lamberto\_roscioli](https://forum.code.org/u/lamberto_roscioli)\ **Post date:** [April 19, 2016, 3:12pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/220 "2016-04-19T15:12:44Z")
I decided to teach the binary lesson. Once complete, I had the students get in groups and had them design a lesson plan to teach the numbering systems with a base 3, another groups teach the numbering system with a base 4, and so on. I told them that one group would present their lesson to the class This gave them practice with other numbering systems to build on what they had learned with a base 2 (binary) numbering system. ---
**Author:** ![dnetra\_bland](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.code.org/dnetra_bland/32/207_2.png) [@dnetra\_bland](https://forum.code.org/u/dnetra_bland)\ **Post date:** [April 21, 2016, 3:03pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/221 "2016-04-21T15:03:05Z")
I worked on binary numbers. I utilized another free site to reinforce what we discussed in class. [www.everfi.com](http://www.everfi.com) Course: RADIUS missions 1-3 Lesson Plan [https://docs.google.com/a/pgcps.org/document/d/1xKGA0EqzFIhzuo7lyz2RZzsDOfT1DAlB3zBAFH0i\_xI/edit?usp=sharing](https://docs.google.com/a/pgcps.org/document/d/1xKGA0EqzFIhzuo7lyz2RZzsDOfT1DAlB3zBAFH0i_xI/edit?usp=sharing) Worksheet [Binary Practice] [1]: [https://docs.google.com/a/pgcps.org/document/d/1aY7YWyiVHFSFI1ZhUT-QoE-tye44KOnv6gHRinoG0qQ/edit?usp=sharing](https://docs.google.com/a/pgcps.org/document/d/1aY7YWyiVHFSFI1ZhUT-QoE-tye44KOnv6gHRinoG0qQ/edit?usp=sharing) ---
**Author:** ![bradleywellsashley](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.code.org/bradleywellsashley/32/522_2.png) [@bradleywellsashley](https://forum.code.org/u/bradleywellsashley)\ **Post date:** [April 22, 2016, 3:00pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/222 "2016-04-22T15:00:55Z")
D’Netra, Thanks for sharing the Google Docs with me - this looks great! Just one suggestion - is there anyway you can make it a game or challenge to convert the Decimal to Binary or Binary to Decimal? Computers do this and then map to ASCII to get letters (I’ve had them spell out things using a [ASCII chart](http://www.asciitable.com)), but you could possibly do something like a [Breakout EDU](http://www.breakoutedu.com) where students are working together to “break the binary code” - just thoughts! Also check out the [CISCO Binary Game](http://forums.cisco.com/CertCom/game/binary_game_page.htm) (might want to mute your sound before) for practice! Brad ---
**Author:** ![vlazo](https://avatars.discourse-cdn.com/v4/letter/v/ccd318/32.png) [@vlazo](https://forum.code.org/u/vlazo)\ **Post date:** [May 9, 2016, 4:56pm UTC](https://forum.code.org/t/u2-challenge-decisions/2098/223 "2016-05-09T16:56:19Z")
I will be working on Binary numbers Days 10 - 12 Unit 2 [Previous page](https://forum.code.org/t/u2-challenge-decisions/2098.md?page=10) [Next page](https://forum.code.org/t/u2-challenge-decisions/2098.md?page=12)