| |
Math
Processor - The
Interactive Calculator
 1)
Do simple arithmetic in CalcuScribe's math processor.
The data entered can be seen on-screen and revised.
CalcuScribe automatically recomputes new answers after
the data is revised! You can see the errors and don't
have to re-enter all the data! Phew!
2)
A teacher can beam word problems from her machine
to the students. They open the file and write math expressions
to solve the word problems.
3) CalcuScribe computes the results, immediately,
and displays them next to each expression.
4) Students can create variable-names (like:
apples, oranges, cats and dogs) and refer to them in
subsequent expressions. They can break-up a complex
problem into simpler parts.
5) Math-files are auto-saved. They can be opened
and scrolled. The cursor can be placed at any location
for revision. As soon as the revision is made, results
for all the expressions are automatically re-computed.
Students can copy 'n' paste within the file or to other
files. They may type text comments to explain their
work and the results, within the file, adjacent to each
math expression.
6) Students can print the file so that a teacher
can evaluate their work. After receiving feedback, students
can revise the expressions and the results are automatically
re-computed.
7) Higher grade students can use scientific and
trigonometric functions. This is subtly done so that
the advanced functions do not confuse the younger kids.
We
happily answer questions, click here
To
Order, click here
EZMath
Begin text with a colon :
End text or math with the Enter
key
Press F12, anytime, anywhere,
to recalculate
Use the up or down
arrow keys to auto-compute
Commands available:
FLOAT shows results with variable # of digits after
the decimal point.
FIXED(#) shows results with fixed # of digits after
the decimal point.
Arithmetic Binary Operators:
+ add
- subtract
* multiply
/ divide
Other Operators:
( left parenthesis
) right parenthesis
Assignment:
= means set equal to
| Example
#1: |
RESULT |
| apples = 5 : apples is
assigned the value |
5 |
| oranges = 3 |
3 |
| fruit = apples + oranges |
8 |
| eaten = 2 : ate an orange and an apple
|
2 |
| fruitleft = fruit - eaten |
6 |
Example
#2: |
|
| FIXED(2) |
|
| Joey_had =10 :$ in his pocket |
10.00 |
| he_spent = 0.99 + 4.50 + .75: for
candy, movie and busfare |
6.24 |
| Joey_has = Joey_had - he_spent : $
left in his pocket |
3.76 |
Exercise:
If Joey wants to equally share the remaining money
with his sister, how much should he give her? |
|
| give_sister = Joey_has/2 : i.e., he
gives one-half of his money to his sister |
1.88 |
Exercise:
If Joey had 20 dollars to start with would his sister
get twice as much, at the end of the day? To find
out, change the value assigned to Joey_had to 20
instead of 10. |
|
MathWiz
DEGREES - angular input and output is in degrees
RADIANS - angular input and output is in radians
360 degrees = 2PI radians
Default settings are FLOAT and DEGREES
PI = 3.141592653589793238
e = 2.718281828459045235
Do not use e or pi as variable names
|
Available
Functions:
sin, cos, tan, asin, acos, atan, sinh, cosh, tanh,
log, ln, alog, exp, sqrt, abs
Function
arguments must be in parenthesis.
For example, sin (90).
Arithmetic
Unary Operators:
- negate, example: -5
! factorial, example: 3!
CalcuScribe calculates factorials of real numbers
- not just integers!
Arithmetic Binary Operators:
^ raised to the power
MIN shows the minimum value
MAX shows the maximum value
|
Logical
Binary Operators:
< less than
<= less than or equal to
> greater than
>= larger than or equal to
< > not equal to
==
identical or equal to
AND logical and
OR logical or
NOT logical not
|
Example
#1:
a = 1.1
b = 2.2
z = a^b
a MIN (b Max z)
|
1.1
2.2
1.2332863
1.1 |
Example
#2: |
|
| a >= b : is it true? |
NO |
| a <> b : is this true? |
YES |
| 2*a == b : b is twice a |
YES |
|
Example
#3:
FIXED(4) : show results with 4 decimal places
|
|
| z = 1.00 |
1.0000 |
| what_is = 1 + z + z^2/2! + z^3/3!
+ z^4/4! + z^5/5! + z^6/6! |
2.7181 |
|
Exercise: for 7 decimal place accuracy change
the results format to FIXED (7)
|
|
| :
Now add more terms to the above series |
|
| what_is = what_is + z^7/7! + z^8/8!
+ z^9/9! + z^10/10! |
2.7182818 |
Example #4:
n = 10 : assign a value to n |
10.0000000
|
| asymptotic_e = (1+n)^n/n^n |
2.5937425 |
Exercise:
Increase n and see how asymptotic_e changes |
|
Example
#5:
RADIANS:
switch to radians |
|
| guess_this = atan(9999999) |
1.5707962 |
Exercise: Don’t know? then multiply
by 2 |
|
| 2*guess_this = |
3.1415925 |
Exercise:
Galileo’s
experiment
: A ball is dropped from a 4 story building. Each
story is 12 feet high. How long does it take the
ball to reach the ground? |
|
| stories = 4 : # of stories |
4.0000000 |
| height = 12: story height |
12.0000000 |
| acceleration = 32 : gravitational
acceleration is 32 feet/sec/sec |
32.0000000 |
| distance = s * h : total distance
the ball falls |
48.0000000 |
| time = sqrt(2 * d/a) : in seconds |
1.7320508 |
Exercise:
How
long will it take the ball to reach the ground if
dropped from the 2nd story? |
|
|
