- Practice problems or activity such as puzzle or card sort (good for homework)- Answer key for practice problems This purchase is for one teacher only. (tes.com)
Can get a free Steam key for about the next 39 hours from the time of this post. (afkmods.iguanadons.net)
You can store private keys for accessing your bitcoins on paper, but this is called exactly a paper wallet. (CoinATMradar.com)