Ultimate Tic Tac Toe

I'm not going to take any credit for this, I just saw it on an awesome blog that can be found here: http://blog.mrmeyer.com/ and the website, which can be found here: Ultimate Tic Tac Toe You can play online here: Play TicTacToe10 It breathes new life into a very old game in a fun and strategic way. Okay, it's not technology exactly as it can be played with paper and pencil, but I found it due to a blog, and it can be played online, so I'm counting it as technology.

MathDisk

Taken from an Edugeek post by DaveP

Create your own worksheets to visualize, interact with and explore the amazing world of mathematics. MathDisk is absolutely free for everyone...
Link: https://www.mathdisk.com/
MathsDisk YouTube channel: https://www.youtube.com/user/mathdisk
Link: MathsDisk How To...
Can be installed as an iOS or Android App, and as it's all on the web there's no installation required!