Decimals Forming and Reading Decimal Numerals Second Presentation(Lesson 8)

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Age

9-12

Materials

  • Numeral cards from the bank game-to millions
  • Decimal numerals cards- to millionths
  • Decimal board


Preparation

Students should have had the Decimal Lessons 1-7 (We are moving from the concrete toward the abstract).


Presentation

This lesson is moving toward standard form.

  • 1. From the numeral 16.5 with the cards. Have the student(s) place it on the appropriate place on the board. "This is read 'sixteen... (point to the 16) ... "AND"... (point to the decimal point) ... 'five tenths'." (point to the 5). "This five is in the tenths' place. The tenths' place is the last decimal place we have a numeral in."
  • 2. Form a numeral 16.05 with the cards. Have the student place it on the appropriate place on the board. Point to the numerals as you read them: "This is read 'sixteen AND five hundredths.' " "The five is in the hundredths' place. There aren't any tenths."
  • 3. Do the same thing with 16.15. "sixteen.. AND...("The word 'and' is always used to indicate the decimal point.")...fifteen hundredths." ("The numeral after the decimal point is fifteen, and it ends in the hundredths' place.")
  • 4. Form a numeral 16.34 with the cards. Have the student place them on the board, and name the numeral. Form other similar numerals-with two decimal places- if necessary until the child is comfortable with them. Then continue with the next step.
  • 5. Form a numeral 27.132 with the cards. Have the student place them on the board, and guide him in naming the numeral: "Twenty seven...AND...(the decimal point)...one hundred thirty-two...(just read the numeral normally)...thousandths."...(we ended in the thousandths' place)
  • 6. Practice more similar numerals until the student(s) can easily read numerals with three decimal places.


Continue with more practice: Teachers can access the link below to copy, cut and mount on cards for students to practice with partners or independently.

Control Of Error

Teacher guided.

Points Of Interest

Participating with the new knowledge helps move the concrete experiences toward abstract thinking

Purpose

  • To make a visual, auditory and kinesthetic impression upon the child on how whole numbers are divided into smaller units-decimals.


Variation

Students can recreate the symbols in these lessons in their Math journals.

Handouts/Attachment