# Geometry SMARTBoard File: Lines and Angles

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NOTEBOOK (SMARTboard) File

3 MB|25 pages
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1. This file consists of my Smart Board Geometry Lines and Angles file and my Lines and Angles printables bundled together. When used together, they are a powerful way to help your students understand all the various lines and angles, and learn how to use a protractor. Topics covered in these interac
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Product Description
This SMARTBoard file is just what you need to help your students understand lines and angles, as well as learn how to use a protractor.

Topics covered in this interactive and colorful file are:
• Points, lines, line segments, rays
• Types of Lines: parallel, intersecting, perpendicular
• Review of vertical, horizontal, and diagonal lines
• Types of Angles: acute, right, obtuse, straight
• How to use a protractor to measure angles
• How to use a protractor to sketch angles of a given measure
• How to use a landmark angle measure, such as 90° to estimate other angle measures
• Finding missing angle measures

You will receive a 25 page SMARTBoard file full of interactive, self-checking activities on the above topics. Students will love coming up to the board to reveal answers! I also offer a bundled version of this file that includes a 29-page printable pdf file with assessment and answer keys, but I wanted to offer this version with the SMARTBoard file only, in case you have your own worksheets for students, and just want the visual lessons to introduce the concepts, especially how to use a protractor. By having the large protractor on the SMARTBoard, it is easy to model for students how it works. Here is the link to the bundled version. Geometry SMARTBoard and Printables Bundle: Lines and Angles

I used this file with great success in my 4th grade classroom, but it would also work as review for 5th grade, as well. My students scored extremely well this spring on the geometry strand of their math testing. I introduced geometry with this file and then followed up with my Geometry SMARTBoard and Printables Bundle: Polygons. This file is available unbundled, as two separate files, as well, for those who want just the SMARTBoard file, or those who want just the printables.

I recommend teaching Lines and Angles first because students need this vocabulary in order to sort and classify polygons. I also have Geometry Vocabulary Cards for both Lines and Angles and Polygons.
Geometry Vocabulary Cards for Lines and Angles
Geometry Vocabulary Cards for Polygons

IMPORTANT! Please note that you must have Smart Notebook or compatible software on your computer in order to use this SMARTBoard file. If you have a different type of interactive white board, please download the preview file first to see if the interactive features work.

Common Core Standards Addressed in This File:
Geometry:
• 4.G.A.1 Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
Geometric measurement: understand concepts of angle and measure angles.
• 4.MD.C.5 Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:
• 4.MD.C.5a An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a “one-degree angle,” and can be used to measure angles.
• 4.MD.C.5b An angle that turns through n one-degree angles is said to have an angle measure of n degrees.
• 4.MD.C.6 Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
• 4.MD.C.7 Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.

Please let me know if you have any questions..

Thanks for checking out my file!
Cathy, aka Downeast Teach

Total Pages
25 pages
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