https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computing-innovations/xcae6f4a7ff015e7d:communication-innovations/a/communication-at-light-speed 2021-04-29T07:50:12Z Communication at light speed article https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computing-innovations/xcae6f4a7ff015e7d:communication-innovations/a/electronic-mail-email 2021-04-29T07:54:07Z Email article https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computing-innovations/xcae6f4a7ff015e7d:communication-innovations/a/sms-messaging-apps 2021-04-29T07:56:53Z SMS article https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computing-innovations/xcae6f4a7ff015e7d:communication-innovations/a/social-media 2021-04-29T07:57:16Z Social media article https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computing-innovations/xcae6f4a7ff015e7d:communication-innovations/e/impact-of-communication-innovations 2021-04-29T07:49:11Z Impact of communication innovations Check your understanding of the risks of email and social media in this set of free practice questions designed for AP Computer Science Principles students. Pamela exercise