math!word!wall:!whole,!part,!digit,!decimal!point,!tenths ... · •...

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Have students locate and mark the beginning of the range represented on the number line as 0, the end of the number line as 2 and mid point as 1. Ask students how can we name the parts between 0 and 1? Introduce the decimal point and it’s funcAon of separaAng the whole number into parts. Ask students to label the posiAon 1 on the number line as 1.0 Discuss 1 whole and no parts. Emphasise the role of the point and how it is wriDen. Use another number line label the range 0 to 2 on the number line. This represents two wholes Ask students to locate and mark in red 0.6 and 1.4 on the number line. Discuss less than one whole and more than 0ne whole. Ask students to show how many tenths difference there is between the two decimals? DRAFTThis is a work in progress. MAG wriAng project 20122013 I can represent the red counters as part of the whole (the set of counters) as 0.3 Working in pairs ask students to demonstrate red counters as 0.7 Decimals are based on ten and have a decimal point. Decimal numbers are based on place value. As we move to the right each posiAon is ten Ames smaller. Three tenths of the set of counters are red. Three tenths can be wriDen as a fracAon 3/10 which is the same as 0.3 Place Value is important when we think about numbers. The decimal point separates ones from tenths in a number. A decimal is a number with one or more digits to the right of the decimal point. Ac$vity ProcessDecimals on a Numberline Provide each student with a blank number line and tell them that the line is going to be used as a model to represent a range of numbers. Ask students to comment on the appearance of the number line eg. arrows at beginning and end. Australian Curriculum Year 4 ACMNA079 Recognise that the place value system can be extended to tenths and hundredths. Make connecAons between fracAons and decimal notaAon . Key Idea Decimals show fracAonal parts of a whole number (less than one) and the conAnuaAon of place value to tenths and hundredths. Resources Blank number line. Fi[y cenAmeter length of string for each student. 30 cenAmeter ruler, two colored marker pens/ textas for each student. FISH Kit Review Ac$vity Process A whole can be divided into parts. Our number system is based on 10. One whole or set can be divided into 10 equal parts. These parts are called tenth. Give a set of ten counters to pairs of students DemonstrateI have a set of ten counters, three of them are red and seven of them are yellow 4.1.9 Math Word Wall: Whole, part, digit, decimal point, tenths, hundreths, value, tenths, half, equivalent. 0 1 0 0.4 1.0 1.4 2.0 1 0 1.0 2.0

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Page 1: Math!Word!Wall:!Whole,!part,!digit,!decimal!point,!tenths ... · • Have!students!locate!and!mark!the!beginning!of!the! range!represented!on!the!number!line!as!0,!the!end! of!the!number!line!as!2!and!mid!point!as!1.!!!

             •  Have  students  locate  and  mark  the  beginning  of  the  

range  represented  on  the  number  line  as  0,  the  end  of  the  number  line  as  2  and  mid  point    as  1.      

 •  Ask  students  how  can  we  name  the  parts  between  0  

and  1?  Introduce  the  decimal  point    and  it’s  funcAon  of  separaAng  the  whole  number  into  parts.  

•  Ask  students  to  label  the  posiAon  1  on  the  number  line  as  1.0  Discuss  1  whole  and  no  parts.  Emphasise  the  role  of  the  point  and  how  it  is  wriDen.  

•  Use  another  number  line  label  the  range  0  to  2  on  the  number  line.  This  represents  two  wholes  

       •  Ask  students  to  locate  and  mark  in  red  0.6  and  1.4  on  

the  number  line.  Discuss  less  than  one  whole  and  more  than  0ne  whole.  

•  Ask  students  to  show  how  many  tenths  difference  there  is  between  the  two  decimals?  

 

DRAFT-­‐This  is  a  work  in  progress.  MAG  wriAng  project  2012-­‐2013  

I  can  represent  the  red  counters  as  part  of  the  whole  (the  set  of  counters)  as  0.3    Working  in  pairs  ask  students  to  demonstrate    red  counters  as    0.7    Decimals  are  based  on  ten  and  have  a  decimal  point.  Decimal  numbers  are  based  on  place  value.  As  we  move  to  the  right  each  posiAon  is  ten  Ames  smaller.    Three  tenths  of  the  set  of  counters  are  red.  Three  tenths  can  be  wriDen  as  a  fracAon    3/10  which  is  the  same  as  0.3    Place  Value  is  important  when  we  think  about  numbers.  The  decimal  point  separates  ones  from  tenths  in  a  number.                          A  decimal    is  a  number  with  one  or  more  digits  to  the  right  of  the  decimal  point.                    Ac$vity  Process-­‐Decimals  on  a  Numberline    •  Provide  each  student  with  a  blank  number  line  and  tell  them  

that  the  line  is  going  to  be  used  as  a  model  to  represent  a  range  of  numbers.    Ask  students  to  comment  

 on  the  appearance  of  the  number  line  eg.    arrows  at  beginning  and  end.  

Australian  Curriculum  Year  4  ACMNA079  Recognise  that  the  place  value  system  can  be  extended  to  tenths  and  hundredths.  Make  connecAons  between  fracAons  and  decimal  notaAon  .    

Key  Idea  Decimals  show  fracAonal  parts  of  a  whole  number  (less  than  one)  and  the  conAnuaAon  of  place  value  to  tenths  and  hundredths.    Resources    •  Blank  number  line.  •  Fi[y  cenAmeter  length  of  string  for  each  student.  •  30  cenAmeter  ruler,  two  colored  marker  pens/

textas  for  each  student.    •  FISH  Kit    

Review  Ac$vity  Process  A  whole  can  be  divided  into  parts.  Our  number  system  is  based  on  10.  One  whole  or  set  can  be  divided  into  10  equal  parts.  These  parts  are  called  tenth.  Give  a  set  of  ten  counters  to  pairs  of  students  Demonstrate-­‐I  have  a  set  of  ten  counters,  three  of  them  are  red  and    seven  of  them  are  yellow  

 4.1.9

Math  Word  Wall:  Whole,  part,  digit,  decimal  point,  tenths,  hundreths,  value,  tenths,  half,  equivalent.  

   0                                                                                                                                                                                                                        1  

   0                                    0.4                                                        1.0                                  1.4                                                      2.0  

1  

   0                                                                                                      1.0                                                                                                    2.0  

Page 2: Math!Word!Wall:!Whole,!part,!digit,!decimal!point,!tenths ... · • Have!students!locate!and!mark!the!beginning!of!the! range!represented!on!the!number!line!as!0,!the!end! of!the!number!line!as!2!and!mid!point!as!1.!!!

•  Have  students    write  the  fracAon  equivalent  to  each  decimal  on  the  numberline.    

•  10  equal  parts  makes  the  whole    

           Ac$vity  Process-­‐                Represen$ng  Decimals  in  an  area  model    Resources:  Blank  Grids  or  create  grid  in  a  Quad  book  •  Decimals  can  be  shown  on  a  grid  –  1.7  

•  Shade  a  blank  grid  to  make  each  decimal  number  statement  true:    

           Compare  •  1.8  is  larger  than  1.4  •  1.5  is  the  same  as  1.50  

•  Watch  to  consolidate  understandinghDp://www.youtube.com/watch?v=yWcNQkmpYVk  

             Ones                                          Tenths  

               Ac$vity  Process-­‐                  Decimals  as  Tenths  and  Hundredths    •  Hundredths  are  one  hundred  equal  parts  of  a  whole  

or  set.    

•  Decimal  numbers  can  be  extended  to  the  hundredths  place.  Shade:  1.30  and  1.03  

             

•  Ask  student  to  think  about  why  zero  is  needed  in  the  decimals  1.30  and  1.03.  What  job  does  it  do  

 Extension  and  Varia$ons  •  Have  the  students  total  amounts  of  money  and  write  

them  in  decimal  format.  eg  4  fi[y  cent  coins,  6  twenty  cent  coins,  9  ten  cent  coins  and  2  fife  cent  coins    as    how  many  whole  dollars  and  cents.    

•  Make  a  list  of  when  we  use  decimals  and  JusAfy  why  we  need  them  

•  Decimal  Matching  Game  hDp://www.sheppardso[ware.com/mathgames/decimals.htm    •  Complete  the  following                worksheet    

               

   0                                                                                                      1.0                                                                                                    2.0  0.5  1/4  

2  

     Ac$vity  Process-­‐Decimals  on  a  Numberline  2    •  Give  each  student  a  50  cm  piece  of  string.  

•  Ask  students  how  we  can  easily  find  the  half  way  point?  Discuss  their  ideas  

•  Ask  them  to  fold  the  string  in  half  and  use  a  coloured  marker  pen  to  mark  the  halfway  point  with  a  thick  line.  

•  Students  use  their  ruler                and  different  coloured                marking  pen  to  make  a                thin  line  at  5  cm                increments  along  the                length  of  the  string.  

•  Ask  “how  many  parts  have  we  marked  along  the  whole  length  of  the  string?”      

•  “Why  have  we  marked  ten  parts  on  our  whole  piece  of  string?”    We  have  ten  digits  that  we  use  to  write  and  represent  value  or  amount.  

•  Ask  students  to  consider  how  much  of  the  number  line  the  piece  of  string  represents-­‐one  half  

•  Have  the  students  find  the  posiAon  0.5  on  their  piece  of  string.  What  do  they  noAce?  It  is  half  of  the  piece  of  string.  Half  of  one  whole  is  represented  as  0.5  

•  Find  the  0.5  on  the  numberline.  Discuss  that  this  is  not  half  of  the  numberline  but  rather  ¼  as  the  numberline  has  a  range  of  2  wholes.  

•  Discuss  that  0.5  is  equivalent  to  one  half.  Of  one  whole.  

 

5  tenths  

   0                                                                                                      1.0                                                                      1.7                  2.0  

                                           1        30                                        

Page 3: Math!Word!Wall:!Whole,!part,!digit,!decimal!point,!tenths ... · • Have!students!locate!and!mark!the!beginning!of!the! range!represented!on!the!number!line!as!0,!the!end! of!the!number!line!as!2!and!mid!point!as!1.!!!

representaAon  they  have  made.  Students  write  the  same  number  as  a  mixed  fracAon  with  whole  numbers  and  tenths.    Digital  photos  can  be  taken  to  record  student  understanding  and  used  as  evidence  of  learning    Student  Learning  Journal  Complete  sentence  starters:  •   Can  I  explain  what  a  tenth  is?    •   What  does  6  tenths  look  link  on  a  number  line  •   Can  I  compare  1.6,  0.6  and  0.60  using  a  place  value  chart  

 Links  to  other  MAGs  

Year  3    

MAG  3.1.3  Place  Value  1    

 

                             

Wishball  Tenths  TLF-­‐ID  L868    Test  your  understanding  of  decimal  place  value  with  numbers  that  include  tenths.  Receive  a  starAng  number,  such  as  128.9,  and  work  towards  turning  it  into  a  target  number,  such  as  845.6.  Spin  a  random  digit,  choose  its  decimal  place  value  and  decide  whether  to  add  or  subtract  the  random  digit  from  your  starAng  number.  You  can  use  a  ‘Wishball’  to  help  you  reach  the  target  number.  Try  to  achieve  the  target  with  as  few  addiAons  or  subtracAons  as  possible.                          Contexts  for  Learning    Inves$ga$on:    1.  A  quilt  was  made  up  of  a  hundred  squares.  Seventy  

three  squares  were  paDerned  and  the  remainder  were  plain.  What  part  of  the  quilt  was  plain  colour?  Ask  students  to  represent  their  answer  as  a  fracAon  and  a  decimal  

Assessment    Have  a  bucket  of  whole  straws  and  parts  of  straws.  How  many  parts  make  a  whole  straw?  (10)    Use  the  materials  to  make  visual  representaAons  of  decimal  numbers  with  units  and  tenths.  Students  write  the  decimal  number  corresponding  to  the  

  3  

Digital  Learning-­‐Learning  Objects    FracAon  Wall  TLF-­‐ID  S4910  On  this  interacAve  fracAon  wall  students  are  required  to  build  up  layers  of  the  wall  by  dragging  and  dropping  blocks  represenAng  different  unit  fracAons.  Students  can  select  from  the  opAons  of  building  the  wall  on  a  blank  screen,  finding  fracAons  equivalent  to  a  whole  or  to  a  half,  or  filling  in  a  wall  that  already  has  some  fracAons  shown  on  it.  Concepts  related  to  fracAons  that  are  greater  than,  less  than  or  equivalent  to  can  be  explored.  Students  can  write  sentences  to  describe  their  findings  and  add  these  to  the  wall  they  construct.                    Hopping  Tenths  TLF-­‐ID  L1085  Help  a  frog  to  jump  along  a  number  line.  EsAmate  the  finishing  point  on  a  number  line,  a[er  adding  or  subtracAng  mulAples  of  tenths  to  a  starAng  number.  For  example,  29.5+(12  x  0.2)  =  31.9.  Explore  the  paDerns  made  on  a  counAng  grid  and  number  line.  IdenAfy  counAng  rules  that  match  the  paDern  of  'landing  spots'  on  a  counAng  grid.