Math Teaching Methods Page 2

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Division
 
Calculate   m athematical  
Write   a nd   c alculate   m athematical  
 
Divide   n umbers   u p   t o  
   
Divide   n umbers   u p   t o   4 -­‐digits   b y  
statements   f or   m ultiplication   a nd  
statements   f or   ÷   u sing   t he   x  
4   d igits   b y   a   o ne-­‐digit  
194   ÷   6
 
a   t wo-­‐digit   w hole   n umber   u sing  
division   w ithin   t he   m ultiplication  
tables   t hey   k now   p rogressing   t o  
number   u sing   t he  
 
the   f ormal   w ritten   m ethod   o f  
tables   a nd   w rite   t hem   u sing   t he  
formal   w ritten   m ethods.  
formal   w ritten  
short   d ivision   w here   a ppropriate  
              3       2  
Written  
1
multiplication   ( ×),   d ivision   ( ÷)   a nd  
method   o f   s hort  
for   t he   c ontext  
6     1   9  
2  
Methods  
1
13
equals   ( =)   s igns  
division   a nd   i nterpret  
 
 
2
26
564   ÷   1
3  
 
remainders  
192   ÷   6
 
Using
4
52
 
known
5
130
appropriately   f or   t he  
                       
4     3
 
r   5  
=   3 2  
multiplication
facts
4
context    
13       5     6  
4  
8
104
10
260
6 ÷2 = 3 by sharing into 2 groups and by
15 ÷ 3 = 5 in each group (sharing)
Grouping using partitioning
Grouping using partitioning
192 ÷ 6 using place value counters to
 
grabbing groups of 2
43 ÷ 3 If I know 10 x 3 …
196 ÷ 6 If I know 3 x 6 … then 30 x 6…
support written method
!
564   ÷   1
3  
=   4 3   r   5   =   4 3  
  =   4
3.38...  
!"
 
                       
4     3   .     3     8   …  
4
5
11
13       5     6  
4   .
0
0  
 
Exchange 100
 
 
for ten 10s
Divide   n umbers   u p   t o   4   d igits   b y   a  
Link to fractions
‘Chunking up’ on a number line
196 ÷ 6 = 32 r 4
two-­‐digit   w hole   n umber   u sing   t he  
 
formal   w ritten   m ethod   o f   l ong  
15 ÷ 3 = 5 groups of 3 (grouping)
19 tens into
 
division,   a nd   i nterpret  
groups of 6
 
remainders   a s   w hole   n umber  
Use language of division linked to tables
Use language of division linked to tables.
Developing  
10 ÷2 = 5
remainders,   f ractions,   o r   b y  
 
conceptual  
3 groups so that is 30 x 6,
rounding,   a s   a ppropriate   f or   t he  
 
exchange remaining 10 for ten 1s
context            
understanding  
How many 3s?
564   ÷   1
3                       4
   
3  
.  
3    
8  
…  
 
 
13         5     6  
4   .     0     0   …  
Use language of division linked to tables
                                              5     2
How many 2s?
                                                      4     4
 
So 192 ÷ 6 = 32
                                                -­‐    
3     9
 
How many 2s?
                                                                5       0  
 
            -­‐      
3       9  
                              1       1       0
                      -­‐  
   
1       0       4  
                                                    6  
!
=   4 3   r   5   =   4 3  
    =   4 3.4   ( to   1
dp)  
!"
 
Solve   o ne-­‐step   p roblems   i nvolving  
Show   t hat   m ultiplication   o f   t wo   n umbers  
Write   a nd   c alculate   m athematical  
Use   p lace   v alue,   k nown   a nd   d erived   f acts  
Multiply   a nd   d ivide   n umbers   m entally  
Perform   m ental   c alculations,   i ncluding  
multiplication   a nd   d ivision,   b y   c alculating  
can   b e   d one   i n   a ny   o rder   ( commutative)  
statements   f or   m ultiplication   a nd   d ivision  
to   m ultiply   a nd   d ivide   m entally,  
drawing   u pon   k nown   f acts  
with   m ixed   o perations   a nd   l arge   n umbers  
With   j ottings    
the   a nswer   u sing   c oncrete   o bjects,  
and   d ivision   o f   o ne   n umber   b y   a nother  
using   t he   m ultiplication   t ables   t hat   t hey  
including:   m ultiplying   b y   0   a nd   1 ;   d ividing  
Multiply   a nd   d ivide   w hole   n umbers   a nd  
 
pictorial   r epresentations   a nd   a rrays   w ith  
cannot  
know,   i ncluding   f or   t wo-­‐digit   n umbers  
by   1 ;   m ultiplying   t ogether   t hree   n umbers  
those   i nvolving   d ecimals   b y   1 0,   1 00   a nd  
the   s upport   o f   t he   t eacher
Solve   p roblems   i nvolving   m ultiplication  
times   o ne-­‐digit   n umbers,   u sing   m ental  
Recognise   a nd   u se   f actor   p airs   a nd  
1000  
…   o r   i n   y our  
and   d ivision,   u sing   m aterials,   a rrays,  
methods
commutativity   i n   m ental   c alculations
repeated   a ddition,   m ental   m ethods,   a nd  
head   … .  
multiplication   a nd   d ivision   f acts,  
including   p roblems   i n   c ontexts  
Recall   p rime   n umbers   u p   t o   1 9  
Recall   a nd   u se   x   a nd   ÷   f acts   f or   t he   2 ,   5  
Recall   a nd   u se   x   a nd   ÷   f acts   f or   t he   3 ,   4  
Recall   x   a nd   ÷   f acts   f or   x   t ables   u p   t o   1 2   x  
know   a nd   u se   t he   v ocabulary   o f   p rime  
Just   k now   i t!  
Count   i n   m ultiples   o f   t wos,   f ives   a nd   t ens  
and   1 0   x   t ables,   i ncluding   r ecognising   o dd  
and   8   t imes   t ables.  
12.  
numbers,   p rime   f actors   a nd   c omposite  
and   e ven   n umbers.  
(non-­‐prime)   n umbers  
Year  
1
2
3
4
5
6
Review   d ivision   f acts   ( 2x,   5 x,   1 0x  
Division   f acts   ( 4x,   8 x   t ables)    
Division   f acts   ( 4x,   8 x   t ables)  
Count   b ack   i n   2 s  
Division   f acts   ( 2   x   t able)  
Division   f acts   ( up   t o   1 2   x   1 2)  
table)  
10   t imes   s maller  
100,   1 000   t imes   s maller  
Division   f acts   ( 3x,   6   x ,   1 2x   t ables)  
Count   b ack   i n   1 0s  
Division   f acts   ( 10   x   t able)  
Division   f acts   ( 4   x   t able)  
Division   f acts   ( 3x,   6   x ,   1 2x   t ables)  
Partition   t o   d ivide   m entally  
 
Partition   t o   d ivide   m entally  
Halves   u p   t o   1 0  
Halves   u p   t o   2 0  
Halve   t wo   d igit   n umbers  
Halve   l arger   n umbers   a nd   d ecimals  
Halve   l arger   n umbers   a nd   d ecimals  
Halve   l arger   n umbers   a nd   d ecimals  
 
Division   f acts   ( 3x,   9 x   t ables)  
 
Count   b ack   i n   5 s  
Division   f acts   ( 5   x   t able)  
Division   f acts   ( 8   x   t able)  
Division   f acts   ( 3x,   9 x   t ables)  
Division   f acts   ( up   t o   1 2   x   1 2)  
100,   1 000   t imes   s maller  
Foundations  
Review   d ivision   f acts   ( 11x,   7 x   t ables)  
Halve   m ultiples   o f   1 0  
Count   b ack   i n   3 s  
Division   f acts   ( 3   x   t able)  
Division   f acts   ( 11x,   7 x   t ables)  
Partition   t o   d ivide   m entally  
Partition   d ecimals   t o   d ivide   m entally  
Review   d ivision   f acts   ( 2x,   5 x,   1 0x  
Division   f acts   ( 6   x   t able)   o r   r eview  
Review   d ivision   f acts   ( 6x,   1 2x   t ables)  
How   m any   2 s?   5 s?   1 0s?  
Division   f acts   ( 6x,   1 2x   t ables)  
Halve   l arger   n umbers   a nd   d ecimals  
table)  
others  
Halve   l arger   n umbers   a nd   d ecimals  

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