Deeanna Golden, a teacher of 24 years at F.M. Golson Elementary
School in Marianna, Florida, is a beloved Illuminations lesson plan
writer. So we asked her, "Why do you think it is important to share resources?"
In this unit, students use the area formula
for a rectangle to discover the area formulas for triangles,
parallelograms, and trapezoids. Students also consider irregular figures
whose areas can be determined by estimation or decomposition.
In this unit, students make groups of 10 to
20 objects, connect number names to the groups, compose and decompose
numbers, and use numerals to record the size of a group. Visual,
auditory, and kinesthetic activities are included in each lesson. This
unit is most appropriate for students typically in the first grade.
Count and subitize by playing a game.
This activity is available for your phone in the Android Market or Apple App Store.
In this unit, students will use
geoboards to visualize the geometric meanings of square and square root.
Every 4 years, citizens of the
United States elect the person they believe should be our nation's new leader.
This unit explores the mathematics of the electoral college, the system used in
this country to determine the winner in a presidential election. The lessons
include activities in percentages, ratios, and area, with a focus throughout on
building problem-solving and reasoning skills. They are designed to be used
individually to fit within your curriculum at the time of an election. However,
time permitting, they can be used as a unit to give students a strong
understanding of how small variations can mean one person becomes president and
another does not. Additionally, the lesson extensions include many ideas for
interdisciplinary activities and some possible school-wide activities.
Although no single lesson in this
unit addresses connections and representation by itself, the entire unit
focuses on the Connections and Representation Standards by allowing students to
make connections among mathematical ideas and asking students to use various
representations to organize their work.
Become proficient with numbers and operations by guiding Okta the octopus through a mathematical maze.
This interactive is also a mobile app. Download it on iTunes or Google Play.