How much do you know about autism? Autism Speaks is inviting you to test your knowledge with their quiz and to learn more about the condition.

According to Autism Speaks, autism, or autism spectrum disorder, “refers to a range of conditions characterized by challenges with social skills, repetitive behaviours, speech and nonverbal communication, as well as by unique strengths and differences.”

Every year on April 2, the organization invites the world to #lightitupblue by wearing blue, lighting up your home or workplace and posting a photo of yourself doing so on social media with the hashtag #lightitupblue.

Not sure how to mark World Autism Awareness Day? Get some ideas below.