Repetition and Replication

An environmental group contacts Nancy to get her experimental procedures so that they can check her results.

• Replication

• Repetition

Dr. Allen has been reading about another scientist’s research in a physics journal. She plans to do these experiments herself and see if she gets the same result.

• Repetition

• Replication

A scientist does THEIR OWN experiment over 3 times to check their results.

• Repetition

• Replication

Joshua goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH.

• Replication

• Repetition

Tags

NGSS.MS-PS1-2

Alyssa has taught her pet rat to run a maze. She thinks that the rat will go faster if she puts its favorite treat at the end. She has the rat run the maze ten times with the favorite treat and ten times with a regular food pellet. She uses a stopwatch to measure how long it takes for the rat to get to the reward.

• Repetition

• Replication

Tags

NGSS.MS-ETS1-3

Keanna was mixing a batch of glue and borax solution to make silly putty and discovered a new substance that glows in the dark. She gave Ryan her specific amounts of ingredients and the steps of her procedure. She asked Ryan to try the experiment to see if he gets the same results.

• Repetition

• Replication

Jermaine was given a set of 5 metal cubes. He calculated the densities of each to determine the type of metal in each. The densities were really close to each other, so he asked his friend Dustin to do the same experiment and see if he gets the same results.

• Replication

• Repetition

Walter is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.

• Replication

• Repetition

Tags

NGSS.MS-ETS1-3

Jerry baked chocolate chip cookies that wound up looking like muffins. He asked DeeDee to use the same directions and see if her cookies also look like muffins.

• Replication

• Repetition

A local ecologist measures the temperature of a nearby lake each day at noon for 1 month.

• Repetition

• Replication