Ages 6 & up MathShark™ Guide for Teachers and Parents EI-8490
CARING FOR MATHSHARK Battery Installation 1. Open the battery compartment door by carefully loosening the screw with a screwdriver. 2. Install two fresh AA alkaline batteries, following the illustration inside the battery compartment. • Batteries must be installed with the correct polarity. • Only batteries of the same or equivalent type are to be used. • Alkaline batteries are preferable. • Do not mix old and new batteries.
MathShark™ CONTENTS Introduction to MathShark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Why is MathShark an Important Learning Tool? . . . . . . . . . . . . 3 Suggestions for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 MathShark’s Special Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 How to Use MathShark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 MathShark Content by Skill Levels . . . . . . . . . . . . . . . .
MathShark™ Guide for Teachers and Parents Congratulations! You have chosen MathShark, the calculator and electronic game that improves math skills. As a CALCULATOR, MathShark performs arithmetic calculations for home or school. As a LEARNING tool, MathShark provides hundreds of drill games, enabling students to sharpen their mental math skills— math performed mentally rather than on paper—from memorization to estimation to mental computation.
Why is MathShark an Important Learning Tool? Mathematics skills are useful throughout our lives.
MathShark‘s LIGHTS A flash of the green light means the answer is correct; a flash of the red light means it is incorrect. ON/OFF Use this button to turn MathShark ON and OFF. LEARNING/CALCULATOR Use this button to choose a mode. SKILL Press one of these buttons to select a skill in LEARNING—ADD, SUBTRACT, MULTIPLY, or DIVIDE. NUMERAL BUTTONS Use these to input answers. DECIMAL BUTTON Use this to input a decimal. FRACTION BUTTON Use this to input a fraction.
Special Features SCREEN Greetings, selection menus, examples, math problems, skill level, and elapsed time appear on the screen. Problems in LEARNING will show in either vertical or horizontal format. ENTER Press this button to enter answers in LEARNING mode or to find the answer in CALCULATOR mode. SKILL Press one of these buttons to select a skill in LEARNING—FRACTIONS, DECIMALS, or PERCENTS. FUNCTION Press a key to add, subtract, multiply, or divide.
HOW TO USE MATHSHARK MathShark is two fully functional learning tools in one! Press ON to start MathShark. It will come on in LEARNING mode unless you press CALCULATOR. For CALCULATOR 1. Press CALCULATOR. 2. Input the first number. 3. Press a function key (+ - x ÷). 4. Input the next number. 5. Press ENTER and the answer will show. 6. Continue the process for a multiple step problem. 7. Press CALCULATOR or CLR to begin a new problem. For LEARNING 1. Press LEARNING if you are in CALCULATOR mode. 2.
5. After choosing SKILL and LEVEL, screen displays EXAMPLES. 6. Press ENTER to start a game, or CLR to choose a different SKILL or LEVEL. 7. First problem appears. Input an answer, then press ENTER. To enter a fraction, use the A/B button. To enter a decimal, use the . button. The HELP button offers a visual clue. The HELP screen might display the problem in another way or provide a hint to getting the correct answer.
MathShark Content by Skill Levels The MathShark Skills Scope and Sequence Chart on pages 20–21 gives an overall look at content in each skill and on each level. The following pages provide a definition of the content for each skill and level, plus some example problems. You may want to use the examples to introduce a new or difficult concept. You might also want to make a reproducible sheet of problems for practice or for assessment.
Level 5 51 + 34 = Add 2-digit addends to 2-digit addends without regrouping. 11 + 11 = 37 + 12 24 + 34 Level 6 Add three 1-digit addends. 3+5+4= 7+1+3= You may want to offer one of these suggestions for mental reminders in adding three numbers: • always add the first two numbers, then add the sum to the third. • always add the easier two numbers, then add the sum to the third. Level 7 Add 2-digit addends to either a 1-digit addend or another 2-digit addend with regrouping.
ASSESS ADD Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 Level 8 © Copyright 2007 Educational Insights, Inc.
Name: ___________________________________ SMENT DIVIDE DECIMALS FRACTIONS PERCENTS EI-8490 MathShark
SUBTRACT Level 1 Basic subtraction facts 0–9 in sequential order. Player selects number to drill. Level 2 Basic subtraction facts 0–9 in non-sequential order. Player selects number to drill. Level 3 Basic subtraction facts 0–9 in non-sequential order. Drill numbers are randomly mixed. Level 4 Subtract 1-digit numbers from 2-digit numbers without regrouping. Level 5 Subtract 2-digit numbers from 2- and 3-digit numbers without regrouping.
MULTIPLY Level 1 Basic multiplication facts 1–12 in sequential order. Player selects number to drill. 5 x5 6 x5 2x5= 8 x5 0 x5 9x2= 4 x3 12 x7 23 x 3 = 32 x 2 = 21 x 5 19 x 1 100 x 4 = 300 x 5 900 x 10 Level 2 Basic multiplication facts 1–12 in non-sequential order. Player selects number to drill. 6x5= Level 3 Basic multiplication facts 1–12 in non-sequential order. Drill numbers are randomly mixed and include multiplication by numbers through 12.
Level 7 47 x 3 = Multiply 2-digit numbers by 1-digit numbers with regrouping. 58 x 2 = 62 x 6 25 x 7 You might want to encourage players to use their estimating skills at this level. Estimation is a valuable tool in mental math. Remind players to enter the complete answer from left to right. Level 8 Introduces the pre-algebra concept of finding the missing factor (shown as ?) in multiplication. 33 x ? = 132 ? x 47 = 94 To find the missing factor, divide the product by the known factor.
DIVIDE Level 1 Basic division facts 1–12 in sequential order. Player selects number to drill. 2÷2= 4÷2= 9÷3= 15 ÷ 3 = 108 ÷ 12 = 18 ÷ 2 = 560 ÷ 10 = 200 ÷ 100 = 364 ÷ 4 = 339 ÷ 3 = 78 ÷ 3 = 80 ÷ 5 = 60 ÷ ? = 3 48 ÷ ? = 6 ?÷4=6 ? ÷ 2 = 32 Level 2 Basic division facts 1–12 in nonsequential order. Player selects number to drill. Level 3 Basic division facts 1–12 in nonsequential order. Drill numbers are randomly mixed and include divisors through 12.
DECIMALS Before beginning work in the DECIMALS skills, make sure player knows how to use the . button to enter a decimal: enter the whole number, press the . button, then enter the decimal numbers. Level 1 Add tenths. 0.2 + 0.3 = 0.4 + 0.6 = 0.3 – 0.1 = 0.8 – 0.6 = 0.10 + 0.01 = 0.20 + 0.12 = Level 2 Subtract tenths. Level 3 Add hundredths. Remind players to determine the answer “mentally” and enter the complete answer. Level 4 Subtract hundredths. 0.28 – 0.14 = 0.34 – 0.22 = 1.13 + 0.42 = 3.
FRACTIONS Before beginning work in the FRACTIONS skills, make sure player knows how to use the A/B button to enter a fraction: enter the numerator, press the A/B button, then enter the denominator. Level 1 Simplify fractions. Once players have learned to simplify fractions in LEVEL 1, all answers for LEVELS 2-8 must be simplified. 4⁄ = 16 90⁄ 100 = Level 2 Add fractions with like denominators, answers not over 1.
Level 5 Subtract fractions with unlike denominators. 1⁄ – 1⁄ = 3 6 3⁄ – 1⁄ = 5 10 Level 6 Multiply fractions with unlike denominators. 1⁄ x 2⁄ = 2 3 1⁄ x 1⁄ = 5 10 5⁄ 8 1 x ⁄4 2⁄ 3 x 1⁄6 To multiply unlike fractions: first multiply the numerators (top numerals in the fraction); then multiply the denominators (bottom numerals in the fraction), and simplify. Level 7 Multiply fractions and whole numbers.
PERCENTS Level 1 Write percents as equivalent fractions. 24% = 13% = 76% = 99% = 10% of 25 = 1% of 100 = 25% of 200 = 50% of 150 = 5% of 200 = 75% of 400 = 40% of 40 = 90% of 600 = ? % of 100 = 50 ? % of 100 = 25 100% of ? = 234 25% of ? = 4 Level 2 Write percents as equivalent decimals. Level 3 Find 1% or 10% of whole numbers. Level 4 Find 25%, 50%, or 100% of whole numbers. Level 5 Find 5%, 20%, or 75% of whole numbers.
Math Skills Scope and ADD SUBTRACT MULTIPLY Level 1 Basic facts, selected number, sequential Basic facts, selected number, sequential Basic facts, selected number, sequential Level 2 Basic facts, selected number, non-sequential Basic facts, selected number, non-sequential Basic facts, selected number, non-sequential Level 3 Basic random facts, non-sequential Basic random facts, non-sequential Basic random facts, non-sequential Level 4 2-digits plus 1-digit, no regrouping 2-digits minus 1-di
Shark™ Sequence Chart DIVIDE DECIMALS FRACTIONS PERCENTS Basic facts, selected number, sequential ADD tenths Simplify fractions Write equivalent fractions Basic facts, selected number, non-sequential SUBTRACT tenths ADD fractions with like denominators Write equivalent decimals Basic random facts, non-sequential ADD hundredths SUBTRACT fractions with like denominators Identify 1% or 10% of whole numbers Dividing with zeros SUBTRACT hundredths ADD fractions with unlike denominators Identif
WARRANTY INFORMATION Dear Customer, Thank you for purchasing MathShark. We’re certain that you will enjoy the learning experiences offered by this product. Educational Insights products are guaranteed to function for one year. Educational Insights warrants each unit against factory defects in material and workmanship for one year from the date of purchase to the original retail purchaser only.