In this new unit, students will be working with points, rays, lines, line segments, angles, parallel lines, and perpendicular lines. Once they've mastered this geometrical vocabulary, students will work to identify these terms within two-dimensional shapes such as quadrilaterals and triangles. In addition, students will learn that angles are measured in one-degree angles to complete a full circle of 360 degrees. They will use nonstandard units of measure (i.e. wax protractor) and standard units of measure (i.e. protractor). Students will learn how to measure and draw angles from 0 to 180 degrees. Finally, at the end of the unit, students will learn that angles are additive, meaning that the measurement of two angles equals one complete angle measurement.
Students will continue to work on their differentiated choice boards in order to practice unit skills through hands-on practice or through technology practice; primarily through iReady Math. It is important to note that the Choice Boards are a guide for students to use during their independent math time. It helps to give them structure. They are responsible for earning 100 points on the choice board over a period of two weeks. Although the format will stay the same, the types of skills, games, and activities offered will change throughout the unit. Additionally, teacher assigned lessons will be given in iReady Math to meet the needs of the individual student. Be sure to ask your child about the work they are doing on their choice board. If they feel like they are falling behind, they are welcome to work on it at home as well, but not to finish it early as a way to have "free" time. Thank you!
4.2 Standards for the Week:
4.G.1- Draw points, lines, line segments, rays, angles (acute, obtuse, right), and perpendicular and parallel lines. Identify these in two-dimensional figures.
4.G.2 - Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.
4.G.3 - Recognize a line of symmetry for a two dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts.
4.MD.5 - Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, by considering the fraction of the circular arc between the points where the two rays intersect.
4.MD.6 - Demonstrate how to measure angles in whole-number degrees using a protractor.
4.MD.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 or letter for the unknown angle measure.