How do you explain the concept of even and odd numbers to a first grader? Any tips??

1 answer:

4 0

My teacher told me to take the number, 3 for example, and break it into ones.

1 1 1

then she said to imagine the ones are going to a dance and need a date. put the one together in groups of two

1-1 1

she then said if there is a one with no date the number is odd

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Solve for x,y, and z.

Ann [662]

The given triangle is isosceles, so the two remaining angles in the triangle both have measure xº. The interior angles of any triangle sum to 180º, so that

58º + xº + xº = 180º

58 + 2x = 180

2x = 122

x = 61

Angles y and z are supplementary to angle x, so that

xº + yº = 180º

and

xº + zº = 180º

and consequently, y = z. In particular, we get

y = 180 - 61

y = 119

and so

z = 119

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