There's nothing regular about them—irregular verbs turn out to be the most common verbs in the English language. Through an analysis of data, learners discover that Zipf's Law describes the patterns of word usage. 

Kilobots, made from only $15 worth of parts, work together to achieve a group goal. The video explains how with a few simple lines of programming, these tiny robots tackle tasks in much the same way animals or cells have for centuries....

Teaches strategies for learning the multiplication facts for 4 up to 12 x 4. Students are then presented with a multiplication facts drill where they practice their mental math along to the video. [7:28]

Teaches strategies for learning the multiplication facts for 5 up to 12 x 5. Students are then presented with a multiplication facts drill where they practice their mental math along to the video. [6:38]

Teaches strategies for learning the multiplication facts for 11 up to 12 x 11. Students are then presented with a multiplication facts drill where they practice along to the video. [4:21]

Teaches strategies for learning the multiplication facts for 7 up to 12 x 7. Students are then presented with a multiplication facts drill where they practice along to the video. [7:45]

Teaches strategies for learning the multiplication facts for 12 up to 12 x 12. Students are then presented with a multiplication facts drill where they practice along to the video. [6:54]

Teaches strategies for learning the multiplication facts for 3. Students are then presented with a multiplication facts drill where they practice along to the video. A follow-up lesson goes over missing number problems, a word problem,...