Geometry

This week we have begun our study of Geometry.  I am using Investigations as a primary resource.  I absolutely love this unit.  My students are extremely engaged as they manipulate shapes.  Our objectives for this unit include recognizing defining attributes of certain shapes and partitioning shapes into halves and fourths.  It is so incredible watching as students use the experience of making various shapes with smaller shapes to give them the background to actually see the shapes inside of others.  This is exactly what they need in order to "partition."  I'm looking forward to more engaging activities as our study continues.

Aimee

Aha Moments About Manipulatives

There has been some discussion lately among my coworkers regarding manipulatives.  It has been a delimma for many teachers as to when to "take away the tools."  As we dive into our new standards we no longer have to feel this pressure.  Our standards clearly outline what students should be using when solving addition, subtraction, mulitiplication or division problems.  For example, in first grade students should be able to solve problems using "concrete materials" using numbers up to 20.  This means allow them to use manipulatives, yes even on the TEST! :)  Follow your standards if you aren't sure.   For me, these standards have given me the permission to do what my students have been showing me that they needed. 
Aimee

negative numbers in first grade

As in most math classes, our class counts everyday in some way. In first grade counting by tens starting at any number is a skill that has to be mastered. This is one way we count everyday. We count forwards and backwards by tens, and when we end they always tell me the NEGATIVE NUMBER!! For example, 112, 102, 92, 82, 72, 62, 52, 42, 32, 22, 12, 2, -8. Yes, they figured it out for themselves based on their knowledge of making ten. With this being said, the video I posted uses this negative number knowledge to solve subtraction. This is much more "real life" than borrowing. It is a great way to give them some background knowledge before we actually expect them to have a full understanding of negative numbers. Another great experience in the minds of first graders! Aimee

Non traditional subtraction

The first part of the video shows an interesting way to teach subtraction. It is important for educators to introduce various methods of solving problems. This is one way that may seem odd to some, but I think it is fabulous! The second part of the video turns more traditional in my opionion. However, I thought the beginning was worth sharing. Aimee