Playlist: Bookmarks
Path Cipher (Codes Part 4)
Now let’s try the Path Cipher – a cipher that mixes things up even more than Zig Zag did.
Pig Pen Cipher (Codes Part 2)
Let’s encode some secret messages with a cipher that was actually used during the American Civil War!
Shift Cipher (Codes Part 1)
Let’s encode and decode secret messages like Julius Caesar!
Jotto
Who can guess the codeword first?
Disneyland Parking Structure Math Project
Your students will use estimation strategies to figure out how many parking spots are there in the parking structure at Disneyland? And you bet I reveal the real answer!
Bulls and Cows
How quickly can you break the numeric code?
Math Curiosity: The Coloring Problem
No video gets me more email from students! How few colors can you use to color in any map so that no two, neighboring regions are the same color?
Place Value (Beyond Base 10)
Place value is something we cover in elementary school. It seems simple, but I’d wager that very few adults really understand the topic. I sure didn’t until I worked with non-base-10 number systems in college. Your students can get a taste of this mind-boggling experience by imagining what it would be like if we didn’t have the number 9. What would each digit represent then?
Reduce Anxiety: Change The Channel (Tool 2)
Reduce anxiety by learning to “change the channel.”