Math/Science/English 6 quarter 1-4

• Multiplying fractions

  Multiply numerators, multiply denominators
• Simplifying fraction answers

  1. Find common factors

  2. Divide numerator and denominator by common factor
• Cancellation method


  Simplify fractions within the problem, then multiply numerators and denominators
• Multiplying mixed numbers

  1. Convert mixed numbers to improper fractions

  2. Multiply numerators, multiply denominators
• Improper fraction


  Numerator is greater than denominator
• Converting mixed number to improper fraction

  1. Multiply whole number by denominator, add to numerator

  2. Copy denominator
• Multiplying fraction by whole number

  Put 1 as denominator of whole number, then multiply
• Factor


  Numbers that you multiply together to get another number
• Greatest Common Factor (GCF)


  The largest factor that is common to two or more numbers
• GCF of 6 and 9

  • 3
  • 1
• GCF of 8 and 2

  • 2
• GCF of 12/15

  • 3
  • 1
• Multiple


  A number that can be divided by another number without a remainder
• Least Common Multiple (LCM)


  The smallest positive integer that is divisible by two or more numbers
• LCM of 10 and 2

  • 10
• LCM of 3 and 4

  • 12
• Least Common Denominator (LCD)


  The smallest common denominator when adding or subtracting fractions
• LCD of 2/3 and 1/6

  • 6
• LCD of 3/7 and 2/4

  • 28
• The body system that controls other parts of the body is the nervous system
• Nervous system

  • Receives signals from stimuli inside and outside of the body
  • Integrates and coordinates bodily activities
• Central nervous system


  Made up of the brain and spinal cord
• Brain


  • Primary organ of the central nervous system
  • Receives and interprets countless signals
  • Makes us conscious, emotional and smart
  • Controls movement, sleep, hunger, thirst and other vital activities
• Parts of the brain

  • Cerebrum or forebrain
  • Cerebellum
  • Brain stem
• Cerebrum or forebrain


  • Largest part of the brain
  • Receives sensory messages
  • Acts as the center of emotions, consciousness, learning and voluntary movement
• Cerebellum


  • Located beneath the cerebrum
  • Smaller than the cerebrum
  • Coordinates involuntary and muscle action
  • Responsible for learning habits and developing skills
  • Helps maintain a person's sense of balance
• Brain stem


  • Elongated area at the base of the brain
  • Contains vital centers for autonomic functions
• Spinal cord

  Cord-like material in the backbone<|>Extends downward from the medulla oblongata through four-fifth of the spinal column
• Peripheral nervous system


  Collects information from the sense organs<|>Transmits information to the central nervous system<|>Delivers decisions to the body parts that will act on the message
• Parts of the peripheral nervous system

  • Autonomic nervous system
  • Somatic nervous system
• Autonomic nervous system


  • Controls or regulates the body's internal environment
  • Includes body temperature, pulse, respiration rate and blood pressure
• Sympathetic and parasympathetic nerves

  Sympathetic nerve produces an effect, parasympathetic nerve opposes it<|>Both systems are directly involved in maintaining normal functions of cells
• Somatic nervous system


  • Associated with conscious or voluntary activities
  • Connects the central nervous system to the body's muscles
  • Controls voluntary movements and reflex arcs
  • Contains afferent nerves (send information to the brain and spinal cord)
  • Contains efferent nerves (send information from the brain)
• Neuron

  Functional unit of the nervous system<|>Has three parts: dendrites, cell body, and axon<|>Dendrites carry messages into the nerve cell<|>Cell body maintains the health of the neuron<|>Axon is the long fiber of the neuron
• Types of neurons

  • Sensory neurons
  • Interneurons
  • Motor neurons
• Sensory neuron


  • Typically has long dendrite and axons
  • Carries messages from receptor organs to the nerve center
• Motor neuron


  • Has short dendrites and long axons
  • Receives information from the nerve centers and transmits it to the effector organs (muscles or glands)
• Interneurons

  • Found only in the central nervous system (brain or spinal cord)
  • Connect sensory neurons to motor neurons
• Solute


  The substance that is being dissolved
• Solution


  The mixture formed when one substance is dissolved in another substance