Adding and Subtracting Fractions Enrichment
(Tree House Construction)
This is an enrichment worksheet covering adding and subtracting fractions. I created this download to use in my classroom because every year students come into my Pre-Algebra and even Algebra classes with a wide variety of skills with fractions.
I plan to re-teach the processes of adding and subtracting fractions but for my higher level students who don't need more practice, I wanted to push them to use their knowledge of fractions in a real world problem: Constructing a Tree House!
This activity has the students building a wall for a tree house with 9 pre-cut pieces of wood of all different widths. They add them up to figure out the height of the wall when it is built horizontally. They then compare the height of the wall to the height of the builder.
(The students can add them left to right getting common denominators the whole way across, or they may decide to group the measurements with like denominators first and then add from there to simplify the process. )
The second part has the students figuring out how much rope they used to construct parts of the tree house: like a climbing rope, tire swing, hanging bucket and ladder. They use their skills of subtracting fractions skills to do this.
Lengths of boards and rope are given in mixed numbers. There are a couple whole numbers throughout the problem, but not many.
If you like this download, please look at my other product for enrichment of multiplying and dividing fractions: Multiplying and Dividing Fractions Enrichment- Gwendolyn's Cupcake Trouble