Download Video time: 13m06s PREVIOUS NEXTfilterCourse: 3 Functional ToolsUpdated October 25, 2019 DescriptionThis second tool is filter, which I explain using several household items. X Next Lesson 16 min Free reduce This lesson teaches reduce using macaroni art. Included is a video lesson. I will have exercises soon. The video lesson is 16 minutes long. Course: 3 Functional Tools 0 / 3 0 / 3 Lessons map free 11 min filter free 13 min reduce free 16 min