Primary Arithmetic, First Year Volume 1; For the Use of Teachers (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 Excerpt: ... Measure, and try again. Let one pupil draw and others estimate whether the square is larger, smaller, or equal to the 6-in. square. Have pupils measure after drawing, so that they may see mistakes and make more accurate estimates. Draw lines a foot long. Pupils observe the lines and try to draw equal lines. Let one pupil draw and others estimate whether the lines are longer, shorter, or equal. Pupils find edges of objects that they think are a foot long. Without pupils observing you, draw lines a foot long, a little more than a foot long, and others a little less than a foot long. Arrange obliquely, horizontally, and vertically. Letter A, B, C, etc. Pupils select different lines. Ex.: The line C is less than a foot long. Other pupils tell whether they agree or not. Have pupils find edges in the room a little more or a little less than a foot long. Without pupils observing you, draw a line 2 ft. long. Have pupils estimate the length. Let them measure. Without pupils observing you, draw lines on the board less than 2 ft., more than 2 ft., and 2 ft. Letter. Have pupils estimate the lengths. Ex.: I think the line B is more than 2 ft. long. Measure. Have pupils find edges in room a little more or a little less than 2 ft. long. Draw a 6-in. line on the board. Do not separate into inches. Draw a foot. Pupils look at both lines. How many 6-in. lines in the foot? Draw a 4-in. line. Pupils observe and draw. Observe the foot and the 4-in. line. How many 4-in. lines in a foot? Place the solids where they can be handled. Pupils estimate the length of edges. Measure. Have pupils show edges of solids that they think are 4 in. long. Have pupils tell how long, wide, and high they think each solid is. Ex.: I think this solid is 4 in. long, 2 in. wide, and 1 in. high, or it ...