Investigating Line Segments, Rays, and Lines
Objectives - To review line segments; and to introduce rays and lines
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Investigating Line Segments, Rays, and LinesObjectives - To review line segments; and to introduce rays and lines |
Summaries |
Materials |
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Children draw line segments and rays and solve problems about the numbers of line segments connecting given points. (Geometry) |
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Children play Number Top-It (3-Place Decimals). [Operations and Computation] Children practice and maintain skills through Math Boxes and Home Link activities. |
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Enrichment - Children draw line segments to create "curved" patterns. [Geometry] Language Diversity - Children make and display a vocabulary chart. [Geometry] |
See Advance Preparation |
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Additional Information Advance Preparation - Place 5 straws and 5 twist-ties per child in two containers near the Math Message. For the optional Enrichment activity in Part 3, obtain the book Opt: An Illusionary Tale by Arline Baum and Joseph Baum (Viking, 1989). Vocabulary · line segment · endpoint · ray · line · Vocabulary (teacher) · diagonal of a polygon |
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Ask children to display certain digits on their place-value tools in the places you specify. For example, ask children to display 5 in the hundredths place, 3 in the tenths place, 8 in the thousandths place, and 4 in the ones place. Children display "4.358" and read, "four and three hundred fifty-eight thousandths." Then specify only one place and digit: Make a number with 5 in the tenths place. Discuss the variety of possible answers. |
Take 5 straws and 6 twist-ties. Try to make two triangles with them. |