Victor 900 Calculator Teacher’s Guide 1
Lesson 1: Learning the Victor 900 Calculator TEACHER’S GUIDE Lesson 1: Learning the Victor 900 Calculator Overview Familiarize students with the calculator. Teacher Materials “Learning the Victor 900 Calculator” transparency, red transparency markers. Student Materials Pencil, red crayons, “Victor 900 Calculator” worksheet, calculator Key Introduced .ON/AC. Teaching Notes Distribute the calculators. Use the transparency to discuss the keys and display of the Victor 900.
Lesson 1: Learning the Victor 900 Calculator TRANSPARENCY Learning the Victor 900 Calculator 900 2 AntiMicrobial 1 4 3 Victor 900 Calculator Teacher’s Guide 3
Lesson 1: Learning the Victor 900 Calculator TRANSPARENCY Victor 900 Calculator 900 AntiMicrobial CE MRC ON/AC M- M+ % ÷ X 7 8 9 4 5 6 1 2 3 0 = Victor 900 Calculator Teacher’s Guide + 4
Lesson 1: Learning the Victor 900 Calculator STUDENT WORKSHEET Learning the Victor 900 Calculator 900 2 AntiMicrobial 1 4 3 Victor 900 Calculator Teacher’s Guide 5
Lesson 2: Using the Victor 900 Calculator TEACHER’S GUIDE Lesson 2: Using the Victor 900 Calculator Overview Use the calculator to enter and view numbers. Teacher Materials “Victor 900 Calculator” transparency. Student Materials Calculator, “Calculator Battle” worksheet, “Calculator Battle Score Sheet”, pencil. Keys Used 1 – 9, .ON/AC. Teaching Notes Distribute the calculators. Ask the students to press the .ON/AC. key. Ask the students to press the “1” and “9” keys to enter the number “19”.
Lesson 2: Using the Victor 900 Calculator STUDENT WORKSHEET Calculator Battle 2 5 1 7 6 9 8 4 3 Victor 900 Calculator Teacher’s Guide 7
Lesson 2: Using the Victor 900 Calculator STUDENT WORKSHEET Calculator Battle Score Sheet Student A Name: Student B Name: Hits Hits Victor 900 Calculator Teacher’s Guide 8
Lesson 3: Addition TEACHER’S GUIDE Lesson 3: Addition Overview Use the calculator to add numbers. Teacher Materials “Addition” and “Correcting Wrong Entries” transparencies. Student Materials Pencil, Calculator, and “Calculator Connections” worksheet. Keys Introduced +, CE Teaching Notes Display the “Addition” transparency. Ask the students to press the buttons as illustrated. Display the “Correcting Wrong Entries” transparency. Ask the students to press the buttons as illustrated.
Lesson 3: Addition TRANSPARENCY Addition 1+2=? 1+3+5=? Press these buttons: The calculator shows: .ON/AC. 1 +. 0. 1. 2. 2. =. 3. ----------------------------- ------------------------------ .ON/AC. 0. 1 +. 1. 3. 3. +. 4. 5. 5. =. 9.
Lesson 3: Addition TRANSPARENCY Correcting Wrong Entries 6+3=? Press these buttons: The calculator shows: .ON/AC. 6 +. 0. 6. 2. 2. .CE. 0. 3. 3. =. 9.
Lesson 3: Addition STUDENT WORKSHEET Calculator Connections Add the numbers in the boxes on the left side of the page. Draw a line to the box on the right side with the correct answer.
Lesson 4: Subtraction TEACHER’S GUIDE Lesson 4: Subtraction Overview Use the calculator to subtract numbers. Teacher Materials “Subtraction” transparency. Student Materials Pencil, Calculator, and “Calculator Connections II”, and “Big Number Math” worksheets. Keys Introduced - (minus key) Teaching Notes Display the “Subtraction” transparency. The “Calculator Connections” worksheet provides additional practice.
Lesson 4: Subtraction TRANSPARENCY Subtraction 9-5=? 8-1-2=? Press these buttons: The calculator shows: .ON/C. 9 -. 0. 9. 5. 5. =. 4. ----------------------------- ------------------------------ .ON/C. 0. 8 -. 8. 1. 1. -. 7. 2. 2. =. 5.
Lesson 4: Subtraction STUDENT WORKSHEET Calculator Connections II Subtract the numbers in the boxes on the left side of the page. Draw a line to the box on the right side with the correct answer.
Lesson 4: Subtraction STUDENT WORKSHEET Big Number Math Use your calculator to subtract the big numbers in the boxes and write down the answers. Circle the biggest answer.
Lesson 5: Repetitive Subtraction and Addition TEACHER’S GUIDE Lesson 5: Repetitive Subtraction and Addition Overview Use the calculator to subtract or add repetitive numbers using the constant function. Teacher Materials “Repetitive Subtraction and Addition” and “Fastest Fingers” transparencies. Student Materials Pencil, Calculator, and “Constant Calculations” worksheet. Keys Introduced Constant function using the =. Key.
Lesson 5: Repetitive Subtraction and Addition TRANSPARENCY Repetitive Subtraction and Addition 15 - 3 - 3 - 3 = ? 6+2+2+2=? Press these buttons: The calculator shows: .ON/AC. 0. -. 15. 3. =. 12. =. 9. =. 6. ----------------------------- ------------------------------ .ON/AC. 0. 15 +. 6. 2. =. 8. =. 10. =. 12.
Lesson 5: Repetitive Subtraction and Addition TRANSPARENCY Fast Fingers Enter 500 + 5 = on your calculator. When the teacher says “Go” add one to your calculator as many times as you can until the teacher says “stop”. The student with the largest number has the fastest fingers.
Lesson 5: Repetitive Subtraction and Addition STUDENT WORKSHEET Constant Calculations Use the =. key to work these constant calculations. 1. 94 – 6 – 6 – 6 = ________ 2. 945 + 12 + 12 + 12 = ________ 3. 543 – 10 – 10 – 10 – 10 = ________ 4. 345 + 22 + 22 + 22 + 22 = ________ 5. 27 – 3 – 3 – 3 – 3 – 3 = ________ 6. 45 + 5 + 5 + 5 + 5 + 5 = ________ 7. 1000 – 100 – 100 – 100 – 100 = ________ 8. 2000 + 50 + 50 + 50 + 50 + 50 = ________ 9. 948 – 8 – 8 – 8 – 8 – 8 – 8 = ________ 10.
Lesson 6: Multiplication TEACHER’S GUIDE Lesson 6: Multiplication Overview Use the calculator to multiply numbers. Teacher Materials “Multiplication” and “Multiplication Mountain Answer Key”, “Multiplying Multiple Numbers”, and “Repetitive Multiplication” transparencies. Student Materials Pencil, Calculator, and “Multiplication Mountain”, “Multiplication Calculator Battle”, and “Calculator Connections III” worksheet. Keys Introduced Teaching Notes X. Display the “Multiplication” transparency.
Lesson 6: Multiplication TRANSPARENCY Multiplication 6X8=? 43 X 5 = ? Press these buttons: The calculator shows: .ON/AC. 6 X. 0. 6. 8. 8. =. 48. ----------------------------- ------------------------------ .ON/AC. 0. 43 X. 43. 5. 5. =. 215.
Lesson 6: Multiplication STUDENT WORKSHEET Multiplication Mountain 7 6 8 9 5 10 4 11 3 12 2 13 1 14 Across Down 1 10 X 10 = __________ 2 5 X 4 = __________ 2 6 X 4 = __________ 3 47 X 20 = __________ 3 3 X 3,201 = __________ 4 19 X 4 = __________ 4 25 X 3,161,825 = __________ 5 16 X 1,193 = __________ 5 156 X 921 = ____________ 6 27 X 89 = __________ 6 48 X 56 = __________ 7 2 X 4,817 = __________ 7 11 X 9 = __________ 8 1,973 X 5 = __________ 9 32 X 274 = _______
Lesson 6: Multiplication TRANSPARENCY Multiplication Mountain Answer Key 9 1 9 9 2 6 8 8 1 4 3 6 7 6 7 9 0 4 5 6 2 5 6 0 3 8 5 4 7 2 4 8 7 7 2 0 0 8 5 7 6 Victor 900 Calculator Teacher’s Guide 0 24
Lesson 6: Multiplication TRANSPARENCY Multiplying Multiple Numbers 6X8X2=? Press these buttons: The calculator shows: .ON/AC. 6 X. 0. 6. 8. 8. X. 48. 2. 2. =. 96.
Lesson 6: Multiplication TRANSPARENCY Repetitive Multiplication 4X2=? 4X4=? 4X6=? 4X8=? Press these buttons: The calculator shows: .ON/AC. 4 X. 0. 4. 2. 2. =. 8. 4. 4. =. 16. 6. 6. =. 24. 8. 8. =. 32.
Lesson 6: Multiplication STUDENT WORKSHEET Multiplication Calculator Battle 12 23 37 65 51 48 38 42 Victor 900 Calculator Teacher’s Guide 17 9 39 15 27
Lesson 6: Multiplication STUDENT WORKSHEET Multiplication Calculator Battle Score Sheet Student A Name: Student B Name: Hits Hits Victor 900 Calculator Teacher’s Guide 28
Lesson 6: Multiplication STUDENT WORKSHEET Calculator Connections III Multiply the numbers in the boxes on the left side of the page. Draw a line to the box on the right side with the correct answer.
Lesson 7: Division TEACHER’S GUIDE Lesson 7: Division Overview Use the calculator to divide numbers. Teacher Materials “Two Methods for Writing Division Problems”, “Division”, and “Repetitive Division“ transparencies. Student Materials Pencil, Calculator, and “Calculator Connections IV” worksheet. Keys Introduced Teaching Notes ÷. Display the transparencies. Ask the students to follow along with you as you discuss the exercise. The “Calculator Connections IV” worksheet provides additional practice.
Lesson 7: Division TRANSPARENCY Two Methods for Writing Division Problems Hand Written Method Calculator Method Quotient 8 6 ) 48 Divisor Dividend Victor 900 Calculator Teacher’s Guide Divisor 48 ÷ 6 = 8 Dividend Quotient 31
Lesson 7: Division TRANSPARENCY Division 48 ÷ 6 = ? 81 ÷ 3 = ? Press these buttons: The calculator shows: .ON/AC. 48 ÷. 0. 48. 6. 6. =. 8. ----------------------------- ------------------------------ .ON/AC. 0. 81 ÷. 81. 3. 3. =. 27.
Lesson 7: Division TRANSPARENCY Repetitive Division 100 ÷ 4 = ? 40 ÷ 4 = ? 88 ÷ 4 = ? 52 ÷ 4 = ? Press these buttons: The calculator shows: .ON/AC. 100 ÷. 0. 100. 4. 4. =. 25. 40. 40. =. 10. 88. 88. =. 22. 52. 52. =. 13.
Lesson 7: Division STUDENT WORKSHEET Calculator Connections IV Divide the numbers in the boxes on the left side of the page. Draw a line to the box on the right side with the correct answer.
Lesson 8: Division with Remainders TEACHER’S GUIDE Lesson 8: Division with Remainders Overview Use the calculator to divide numbers with remainders. Teacher Materials “Two Methods for Writing Division with Remainders”, “Division with Remainders”, “Repetitive Division with Remainders”, and “Calculating the Remainder” , transparencies. Student Materials Pencil, Calculator, and “Calculator Connections V” worksheet. Keys Introduced Teaching Notes ÷. Display the transparencies.
Lesson 8: Division with Remainders TRANSPARENCY Two Methods for Writing Division with Remainder Problems Hand Written Quotient Remainder 9.6 5 ) 48 Divisor Calculator Method Dividend Victor 900 Calculator Teacher’s Guide Divisor Remainder 48 ÷ 5 = 9.
Lesson 8: Division with Remainders TRANSPARENCY Division with Remainders 48 ÷ 5 = ? 74 ÷ 6 = ? Press these buttons: The calculator shows: .ON/AC. 48 ÷. 0. 48. 5. 5. =. 9.6 ----------------------------- ------------------------------ .ON/AC. 0. 74 ÷. 74. 6. 6. =. 12.
Lesson 8: Division with Remainders TRANSPARENCY Repetitive Division with Remainders 100 ÷ 6 = ? 40 ÷ 6 = ? 88 ÷ 6 = ? 52 ÷ 6 = ? Press these buttons: The calculator shows: .ON/AC. 100 ÷. 0. 100. 6. 6. =. 16.666666 40. 40. =. 6.6666666 88. 88. =. 14.666666 52. 52. =. 8.
Lesson 8: Division with Remainders TRANSPARENCY Calculating the Remainder 76 ÷ 8 = ? Press these buttons: The calculator shows: .ON/AC. 76 ÷. 0. 76. 8. 8. =. 9.5 ----------------------------- ------------------------------ 9 X. 9 8. 8. =. 72 ----------------------------- ------------------------------ 76 -. 76. 72 55. ═. 4. Victor 900 Calculator Teacher’s Guide The remainder is 4.
Lesson 8: Division with Remainders STUDENT WORKSHEET Calculator Connections V Divide the numbers in the boxes on the left side of the page. Draw a line to the box on the right side with the correct answer. 164 ÷ 5 36.571428 32 ÷ 9 8.8846153 256 ÷7 12.75 23 ÷ 12 3.5555555 231 ÷ 26 2.5 20 ÷8 32.8 51 ÷ 4 1.9166666 147 ÷ 21 7.
Lesson 9: Decimals TEACHER’S GUIDE Lesson 9: Decimals Overview Use the calculator to add and subtract numbers with decimals. Teacher Materials “Decimals” transparency Student Materials Pencil, Calculator, “Calculator Connections VI” worksheet, “Estimation Exploration” worksheet, and “I Love Decimals” worksheet. Keys Introduced Teaching Notes ●. The “Calculator Connections VI” worksheet provides additional practice.
Lesson 9: Decimals TRANSPARENCY Decimals 2.5 + 5.3 = ? 7.4 - 6.1 = ? Press these buttons: The calculator shows: .ON/AC. 0. 2.5 +. 2.5 5.3. 5.3 =. 7.8 ----------------------------- ------------------------------ .ON/AC. 0. 7.4 -. 7.4. 6.1. 6.1 =. 1.
Lesson 9: Decimals STUDENT WORKSHEET Calculator Connections VI Add the Decimals in the boxes on the left side of the page. Draw a line to the box on the right side with the correct answer. 16.4 + 5.3 1.5 3.2 - 1.7 3.5 2.5 +7.1 21.7 2.3 + 1.2 20.5 23.1 - 2.6 13.8 9.7 + 4.1 12.5 5.1 - 1.4 9.6 14.7 - 2.2 3.
Lesson 9: Decimals STUDENT WORKSHEET I Love Decimals Estimate the answer for the math problems then use your calculator to check the answers. Write your estimates in the left arc of the hearts and the calculator answers in the right arcs. Example: Estimate 8.0 8.1 Calculator 5.7 + 2.4 = 4.5 + 6.7 = 3.8 - 9.2 = 5.9 - 8.1 = 3.7 + 5.6 = 6.3 - 9.0 = 7.5 - 6.6 = 7.7 + 4.3 = 9.1 + 7.8 = 9.3 + 5.
Lesson 10: Memory TEACHER’S GUIDE Lesson 10: Memory Overview Use the calculator to add and subtract numbers and store the numbers in the calculator’s memory Teacher Materials “Calculator Memory”, “Adding Products with Memory”, and “Find the Total Cost Using Memory”, transparencies. Student Materials Pencil, Calculator, and “Million Memory Magic” worksheet. Keys Introduced Teaching Notes MRC . M+. M-. Talk to the students about memory, and how it works on a calculator.
Lesson 10: Memory TRANSPARENCY Calculator Memory M+. Adds the displayed number to the memory of the calculator M-. Subtracts the displayed number from the memory of the calculator MRC. Recalls and displays the number in memory MRC. MRC.
Lesson 10: Memory TRANSPARENCY Adding Products with Memory What is the total of the three equations below? 2 x .86 = ? 3 x 1.49 = ? 4 x .52 = ? Press these buttons: The calculator shows: ON/AC MRC MRC ON/AC 2 x . 99 =. M+. 3 x. 1 . 0. 1.98 MEMORY 1.98 49 =. MEMORY 4.47 .M+. MEMORY 4.47. 4 x. . 52 =. MEMORY 2.08 M+. MEMORY 2.08 MRC. MEMORY 8.
Lesson 10: Memory TRANSPARENCY Find the Total Cost Using Memory 3 $5 Items 6 $2 Items $13 Discount = ? Press these buttons: The calculator shows: ON/AC MRC MRC ON/AC 3 x 5 = 15. MEMORY 15 M+. 6 x 2 0. = MEMORY 12 M+. MEMORY 12 MRC. MEMORY 27 -.
Lesson 10: Memory STUDENT WORKSHEET Million Memory Magic Use the Memory function to quickly divide 1,000,000 by 1 through 10. Enter 1,000,000 into memory. Use the MRC key to recall the 1,000,000 value instead of re-entering 1,000,000 for each equation.
Lesson 11: Percents TEACHER’S GUIDE Lesson 11: Percents Overview Use the calculator for situations involving sales taxes, discounts, or other percent problems. Teacher Materials “Percents” and “More Percents” transparencies. Student Materials Pencil, Calculator, and ”Would You Like To Own an Amusement Park?” worksheet. Keys Introduced Teaching Notes %. Remember the %. key acts like the =. key so =.
Lesson 11: Percents TRANSPARENCY Percents $3.70 - 12% discount =? $7.50 + 6% sales tax= ? Press these buttons: The calculator shows: ON/AC ON/AC 0. 3.70 – 3.70 12 % 3.256 ------------------------------ ----------------------------------- 7.50 + 7.50 6. % 7.
Lesson 11: Percents TRANSPARENCY More Percents $4.90 - 15% discount=? $8.20 + 7% sales tax Press these buttons: The calculator shows: ON/AC ON/AC 0. 4.90 - 4.90 15. 4.165 %. ------------------------------- ------------------------------------ 8.20 + 8.20 7. %. Victor 900 Calculator Teacher’s Guide 8.
Lesson 11: Percents STUDENT WORKSHEET Would you like to own an Amusement Park? Decide what rides to offer and set the ticket price for each ride. Offer a 10% discount. Use 5% for the Tax rate and calculate the final price. ___________________’s Park Name of Ride Twister Original Cost of Ride $10.00 % discount 10% Sale Price $9.00 Sales Tax % 5% Final Cost $9.
Lesson 12: Interest TEACHER’S GUIDE Lesson 12: Interest Overview Use the % key to determine interest amounts for a loan. Teacher Materials “Simple Interest” and “Total with Interest” transparencies. Student Materials Pencil, Calculator, and ”Interesting Ride” worksheet. Keys Introduced Teaching Notes %. Remember the %. key acts like the =. key so =. does not need to be pressed at any point when doing percents The worksheet “Interesting Ride” is fun and interesting to students.
Lesson 12: Interest TRANSPARENCY Simple Interest $750.00 at 13% =? $299.00 at 3% =? Press these buttons: The calculator shows: ON/AC ON/AC 0. 750 x 750. 13 % 97.5 ------------------------------ ----------------------------------- 299 x 299. 3. % 8.
Lesson 12: Interest TRANSPARENCY Total with Interest $490 + 15% =? $820 + 7% =? Press these buttons: The calculator shows: ON/AC ON/AC 0. 490 + 490. 15. 563.5 %. ------------------------------- ------------------------------------ 820 + 820. 7. %. Victor 900 Calculator Teacher’s Guide 877.
Lesson 12: Interest STUDENT WORKSHEET INTERESTing Ride Hop aboard and get ready for the INTERESTing ride!! Below are a few problems that are fun. Come along and enjoy the ride. ☺ Mr. Bob has a piggy bank that has $300.00 in it. The piggy pays Mr. Bob 3% per year. How much interest will piggy pay Mr. Bob in the first year? ☺ Mrs. Bob has a jar full of $3,500.00 all in pennies that is 350,000 pennies. Every year the jar pays Mrs. Bob 9% interest. How much money will the jar pay Mrs.
Lesson 13: Square Roots and Squares TEACHER’S GUIDE Lesson 13: Square Roots and Squares Overview Use the calculator to determine the square and square root of numbers. Teacher Materials “Why Call it the “Square”, “Square Roots”, and “Squares” transparencies. Student Materials Crayons, Calculator, and ”Square Grid” worksheet. Keys Introduced Teaching Notes √. Remember to explain that Square roots and Squares are inverses of each other.
Lesson 13: Square Roots and Squares STUDENT WORKSHEET Why Call it the “Square”? When small squares are used to make a larger square you can see why we use the term “Square”. 3 high ═ 9 9 is the “Square” of 3. 3 wide 3 is the “Square Root” of 9.
Lesson 13: Square Roots and Squares TRANSPARENCY Square Roots √ 121 = ? √ 225 = ? √ 36 = ? Press these buttons: The calculator shows: ON/AC ON/AC 121 .√ . ---------------------------225 .√ . ----------------------------36. .√ . Victor 900 Calculator Teacher’s Guide 0. 11. ---------------------------------15. ---------------------------------6.
Lesson 13: Square Roots and Squares TRANSPARENCY Squares 122 = ? 42 = ? Press these buttons: The calculator shows: ON/AC ON/AC 0. 12 x 12 144. ------------------------------- ------------------------------------ 4 x 4 16.
Lesson 13: Square Roots and Squares STUDENT WORKSHEET Square Grid Victor 900 Calculator Teacher’s Guide 62
