Super Second

Unit 5- Fractions

This unit bundles student expectations that address constructing, describing, and naming fractional parts of a whole using models.

Prior to this unit, in Grade 1, students partitioned two-dimensional figures into two and four fair shares or equal parts and described the parts as examples or non-examples

of halves and fourths. Also, in Grade 2 Unit 4, students were introduced to decomposing two-dimensional shapes into equal and unequal parts.

During this unit, students continue to develop spatial visualization skills, meaning the creation and manipulation of mental representations of shapes, as they decompose

two-dimensional figures and partition objects into two, four, or eight parts. Students analyze the resulting parts to determine if equal parts exist and name the fractional parts using words rather than symbols (e.g., one-half or 1 out of 2 equal parts rather than ). Through exploration, students discover and explain the relationship between the number of fractional parts used to make a whole and the size of the parts. Using concrete models, students recognize how many parts it takes to equal one whole, and use this understanding to count fractional parts beyond one whole. Students make connections between counting whole numbers and counting fractional parts as well as extend their understanding of hierarchical inclusion, meaning each prior number in the counting sequence is included in the set as the set increases, to include the sequence of

fractional parts.

After this unit, in Unit 11, students will revisit constructing, describing, and naming fractional parts of a whole. After this unit, in Grade 3, students will extend their

understanding of fractions to include fractional parts of a set of objects and representing fractions using symbolic notation. Students will compose and decompose fractions

and represent equivalent fractions with denominators 2, 3, 4, 6, and 8 using a variety objects and pictorial models, including strip diagrams and number lines.

Lots of Hands on during this unit!

Make sure that you are using lots of exploration during this unit.

• fraction bars and circles (one halves, fourths, and eighths)
• sentence strips
• paper folding
• geoboards(there is a GREAT app for this)

Are all excellent way to get students exploring and working with fractions!