Help!
?? ?????? ???????? ??? ???? ??????????
Können Sie mir die Weise zum Flughafen
erklären?
Pode você dizer-me a maneira ao
aeroporto?
Can you tell me the way to the airport?
Substituting into Formulas
Algebra is a language and
this bit is like asking your
way to the airport...
Forumulas...
3x  4 y
C  2 r
1 2
ut  at
2
A  r
V  I R
2
Putting numbers in...
Write the formula down
Replace letters with the numbers you
have been given
Terms like 2x become (say) 2 × 4.5
Rules of B.O.D.M.A.S. apply!
Look at next example...
Example...
1 2
v  ut  at
2
u  8, a  10,
t4
Write the numbers in...
1 2
v  ut  at
2
u 884,  a1  10
,
2
10  4
t4 2
8  4  0.5 10  4
2
Apply BODMAS rules...
8  4  0.5 10  4
2
4² = 4 × 4
v  32  80  112
Your turn
Work in different
pairs
A shuffles formulas
and picks one
B shuffles value cards
and picks one
Substitute in
Try and do 5 in 10
min
Consolidation
Complete the handout with
mixed questions.