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3-1 Conjectures & Counterexamples

Authored by Kristine Smaglik

Mathematics

9th - 12th Grade

CCSS covered

Used 20+ times

3-1 Conjectures & Counterexamples
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A concluding statement reached using inductive reasoning is called a _______

compound statement

conjecture

condition

counterexample

Tags

CCSS.7.SP.A.2

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

How can you prove a conjecture is false?

Counterexample
Not Possible
Patterns

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a counterexample?

A generalism that cannot be applied to a specific case

A specific case that help to prove a conjecture is true

A general case that is supported by specific examples

A specific case for which a conjecture is false

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To fully disprove a conjecture, one needs to find only ONE counterexample.

True

False

Tags

CCSS.L.11-12.4C

CCSS.L.6.4C

CCSS.L.7.4C

CCSS.L.8.4C

CCSS.L.9-10.4C

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Complete the conjecture.
The sum of two negative numbers is ___________.

positive
negative
odd
even

Tags

CCSS.7.NS.A.1C

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

How many counters would come next?

5
7
9
11

Tags

CCSS.4.OA.C.5

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If it is an angle, then it is acute. What is an appropriate counterexample?

70⁰
45⁰
120⁰
True. There is no counterexample.

Tags

CCSS.7.G.B.5

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