The purpose of this resource is to quantitatively evaluate the accuracy of a classification system. Students sort birds into three possible classes based on each bird's beak: carnivores, herbivores, and omnivores. Students compare their answers with a given set of validation data.

Students cut apart provided words. Teacher guides students to group similar words together. If necessary, teacher prompts with "Notice how the words look" and/or "Notice how the words sound."

The purpose of the sort is NOT to teach "rules" regarding what sounds these letter combinations make. Instead, it is to build confidence in recognizing some common, yet difficult combinations when reading words and also spelling words with this sound in it.

For an extension, students could also create subgroups by sorting according to where the letter combination is found in the word-at the beginning, middle, or end.

It is suggested that an anchor word for each combination be added to a resource such as a word wall or word study notebook for future reference.

For assessment, students could sort and glue into the groups, read the list of words from the sort, or spell the words from the sort.

This video was created by NCDPI. This video examines best practices and research related to developing computational fluency. Teaching strategies and tips are provided.

Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed if off just the smallest bit. Many of the measurements made while navigating involve angles, and a small error in the angle can translate to a much larger error in position when traveling long distances.

Students create model elevator carriages and calibrate them, similar to the work of design and quality control engineers. Students use measurements from rotary encoders to recreate the task of calibrating elevators for a high-rise building. They translate the rotations from an encoder to correspond to the heights of different floors in a hypothetical multi-story building. Students also determine the accuracy of their model elevators in getting passengers to their correct destinations.

In this assessment task students will complete a hundreds chart that already has numbers filled in. They will write numbers to complete a 50 or 120 grid task sheet. This is a small group or whole group. A 50 and 120 grid assessment task sheet and a rubric are provided.

In this activity students practice measuring techniques by measuring different objects and distances around the classroom. They practice using different scales of measurement in metric units and estimation.

Students learn the metric units engineers use to measure mass, distance (or length) and volume. They make estimations using these units and compare their guesses with actual values. To introduce the concepts, the teacher needs access to a meter stick, a one-liter bottle, a glass container that measures milliliters and a gram scale.

This is a remix of the original resource Closed Word Sort: oi / oy by Elaine Shobert.
This remix focuses on grade 2 standards, but can be modified. The resource will take the learner through a series of four interactive activities and an assessment. The activities can be modified to fit vowels, vowel teams, word endings, etc.

Students experience the engineering design process as they design and build accurate and precise catapults using common materials. They use their catapults to participate in a game in which they launch Ping-Pong balls to attempt to hit various targets.

In this assessment task students will be assessed on rote counting. They will count forward to120 starting from 1 or from any number the teacher chooses with accuracy. An assessment task sheet and rubric are provided.

The earliest explorers did not have computers or satellites to help them know their exact location. The most accurate tool developed was the sextant to determine latitude and longitude. In this activity, the sextant is introduced and discussed with the class. Students will learn how a sextant can be a reliable tool that is still being used by today's navigators and how computers can help assure accuracy when measuring angles. Also, this activity will show how computers can be used to understand equations even when knowing how to do the math is unknown.