Lines can be tricky, especially when it comes to their relationships with one another. First thing's first, a line has no thickness and goes on forever and ever! They are defined by the points that are located on them. If we were to say that we have points that are collinear, this would mean that we have two or more points which lie on the same line. See below! Points P, Q, and R are what we would call...you guessed it! Collinear!
As for their relationships, are they skew, parallel, intersecting, perpendicular? I found a great way to get the kids involved in showing these relationships between lines. You want to get them to do anything hands-on, anything fun. Who says math cannot be fun?!
I personally like this small activity because it's not expensive AT all, and can easily be set up in journals or even worksheets. All you need is tape or glue, toothpicks, and stickers. Voila! A simple, hands-on activity to help demonstrate lines.
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