Faculty Name: Sandra H. Jones

School: Weddington Math, Science,

and Technology Academy

Grade Level: 6^{th}

**Teaching objective(s):
**Interpret and write inequalities

**Instructional Activities:
Teacher Will:
**1. Ask students is there ever a reason that we should have to use

inequalities. (Response: when we don’t know exactly what an expression is

equal to).

2. Ask students to give real-life examples of
inequalities. (Response: amusement

park; alcohol and cigarette purchases; express check-out)

3. Display and discuss inequality signs.*Remind students
that inequalities are

read from left to right.)

4. Display simple inequalities and have volunteers read:

Ex:

x< 4 –is less than

x> 4 – is greater than

x ≤ 4 – is less than or equal to

x ≥4 – is greater than or equal to

5. Remind students of the situations that were discussed
earlier. Discuss which

word/words in the situations told them or gave them a clue for which

inequality to use.

6. List student given words on transparency. (Possible responses: at least, at

most, minimum speed, maximum speed)

7. Display inequality word problems, have student volunteers write the

inequality using numbers, variables and the inequality sign. (problem: A

number less five is greater that 7 Answer: x –5> 7)

8. Distribute and explain “Inequality Match-Up” to groups. Allowing students

about 5 minutes to complete activity. Observe and assist students as needed.

9. Summarize lesson by explaining that using riddles they can also solve

inequalities. Explain that the solution must satisfy all statements in the
riddle.

Riddle#1 “I am thinking of a natural number that is greater than 7 but less

than 10. When I multiply this number by 9, the answer is a perfect square.

(Response: 7<x<10; x =9)

Riddle #2: “I am thinking of an integer that is greater than 2 but no bigger

than 9. If I add 3 ¾ to this integer, the result is a rational number that
cannot

be smaller than 12 or more than 13. (Response: 2< x ≤ 9; 9+3 3/4=12 ¾;x =9 )

**Materials and Resources**

Overhead Projector

Transparency

“Inequality Match-Up” game

**Assessment
**1. Teacher observation: observe students and assist as they work in groups to

complete game

2. Check for accuracy of riddle.

Transparency #1:

1) A number less 5 is greater than 7.

x-5>7

2) A number greater than or equal to -2.

X ≥2

3) A number greater than -2, but less than or equal 4.

-2 < x ≤ 4

Transparency #2:

1) I am thinking of a natural number that is greater than 7 but

less than 10. When I multiply this number by 9, the answer is

a perfect square.

7< x <10 ( answer x=9) (9 x 9= 81;
= 9)

2.) I am thinking of an integer that is greater than 2 but no bigger

than 9. If I add 3 ¾ to this integer, the result is a rational number

that cannot be smaller than 12 or more than 13.

2< x ≤ 9; (answer: x=9); (9 + 3 ¾ =12 ¾)

**“Inequality Match-Up”
**Directions: Each group will be given a set of 30 index cards:

fifteen (15) with inequalities and fifteen (15) with the inequalities

written in word format. After all cards have been shuffled and

turned face down, students will take turns flipping cards matching

the inequality with the word format. Student with the most matches

wins.

6 + m < 2 | Six plus a number is < 2 |

5k ≥ 25 | five times a number is greater than
or equal to twenty-five |

9j ≤18 | A number times nine is less than or equal to eighteen |

C – 2 ≤ 5 | Two less than a number is less than or equal to five |

2a + 3 < 7 | Three more than a number times two is less than seven |

7r + 5 > 19 | Five more than seven times a number is greater than nineteen |

4b -2 > 10 | Two less than a number times four is greater than ten |

8x – 3 ≥ 13 | Three less than a number times eight is greater than or equal to thirteen |

3y – 11 > 1 | Eleven less than three times a number is greater than 1 |

3f > 15 | Three times a number is greater than fifteen |

m + 3 <6 | Three more than a number is less than six |

P – 8 ≤ | Eight less than a number is less than or equal to negative twelve |

4b ≥ 16 | A number times four is greater than or equal to sixteen |

S + 12< 11 | Twelve more than a number is less than eleven |

T + 4 > | Four more than a number is greater than negative two |