After you complete an activity, attach a copy of your certificate "Try a one-hour tutorial designed for all ages in over 45 languages. Join millions of students and teachers in over 180 countries starting with an Hour of Code. Computers are everywhere, changing every industry on the planet. But fewer than half of all schools teach computer science. Good news is, we’re on our way to change this! If you've heard about the Hour of Code before, you might know it made history. More than 100 million students have tried an Hour of Code. With the Hour of Code, computer science has been on homepages of Google, MSN, Yahoo!, and Disney. Over 100 partners have joined together to support this movement. Every Apple Store in the world has hosted an Hour of Code, and leaders like President Obama and Canadian Prime Minister Justin Trudeau wrote their first lines of code as part of the campaign."