Howard Hughes Medical Institute
Winogradsky Columns: Microbial Ecology in the Classroom
Winogradsky columns are ideal for observing the role of bacteria and other microorganisms in an ecosystem. This student activity guide is complete with data tables for observations and analysis questions for processing what was observed....
Math Salamanders Ltd.
Column Addition: Money 3 Digits
Math whizzes solve 20 addition problems. Each problem has two money amounts added in vertically lined up columns.
Curated OER
Column Addition, 4-Digit Numbers
Just follow the columns! Young mathematicians complete 16 addition problems with five addends each. They examine two examples before doing these, and the example problems demonstrate carrying one and two into the next column. Encourage...
Curated OER
Column Addition
Third and fourth graders read the addition word problems and use the sets of numbers within the problem along with column addition to solve the problems.
Math Salamanders Ltd.
Column Addition - 2 Digits Sheet 3
In this column addition activity, learners add two-digit numbers with regrouping. Students complete 12-column addition problems.
Curated OER
Column addition - 4 digits sheet 1
In this column addition worksheet, students add four digit numbers together with regrouping. Students complete 15 column addition problems.
Math Salamanders Ltd.
Column Addition - 4 Digits Sheet 4
In this column addition worksheet, students add four-digit numbers together with regrouping. Students complete 15 column addition problems.
Math Salamanders Ltd.
Column Addition - 5 Digits Sheet 1
Here is a column addition with a five-digit activity, in which learners add the five-digit numbers while carrying and keeping the columns aligned.
Curated OER
Column Addition - 2 Digits Sheet 1
In this column addition problem, learners add two-digit numbers with and without regrouping. Students complete 12 addition problems.
Math Salamanders Ltd.
Column Addition - 2 Digit Sheet 2
In this column addition learning exercise, students complete two-digit addition problems with and without regrouping. Students complete 12 addition problems.
Curated OER
Column Addition (No Regrouping)
In this column addition instructional activity, learners add two and three digit numbers together without regrouping. Students complete 15 addition problems.
Curated OER
Column addition - 4 digits sheet 2
Elementary schoolers add four-digit numbers together with regrouping. Students complete 15 column addition problems.
Curated OER
Column Addition Money 4 Digits Sheet 4
For this column addition worksheet, students add four-digit numbers together with decimals that represent money. They then turn the horizontal problems into vertical problems and complete 20 of them.
Curated OER
Column Addition Rules
Expanded column addition is when a child breaks down each place value into its component numbers then adds all the sums together. Present the rules of expanded addition to help learners understand what it actually means to add multiple...
Curated OER
Column Addition: Homework
Puils solve 15 column addition problems and one word problem. Houghton Mifflin text is referenced.
Perkins School for the Blind
Testing the Strength of a Column
Columns have been used throughout the world because they are good load-bearing structures. Learners with visual impairments conduct an experiment to work through the design process as well as to understand this engineering phenomenon....
Physics Classroom
Name That Harmonic: Closed-End air Columns
Physics is like music—practice makes perfect! Challenge your class using an interactive that builds harmonic skills. The engaging lesson from a playlist exploring sounds and waves revolves around wave behavior in closed-end air columns....
Physics Classroom
Name That Harmonic: Open-End air Columns
Ever wonder what really goes on inside a clarinet? Show your young scientists the physics of open-end air columns through an easy-to-use interactive. Learners examine the features of standing waves and calculate frequency and length in a...
West Contra Costa Unified School District
Simplify Expressions and Solve Equations Using Two-Column Proofs
Increase understanding of the algebraic properties and their importance. Scholars justify their steps as they simplify expressions and solve equations. They formalize their work as two-column proof.
Polar Trec
Nature's Density Column
Nature provides density columns in the polar regions that provides food for many animals. Young scientists build their own density columns with water in order to answer analysis questions. Through a slideshow presentation, scholars...
Teach Engineering
Density Column Lab - Part 2
Groups suspend objects within layers of liquids to determine the densities of different liquids and compare them to the densities of objects calculated in Part 1. The groups then carefully test their calculations by layering the liquids...
Curated OER
Column Addition, 3-Digit and 4-Digit Numbers
Show scholars that if they can add two multi-digit numbers, they can add four! They complete 20 practice problems adding three and four-digit numbers. All the equations have four addends and include units. All numbers are whole numbers....
Curated OER
Column Addition With 2-Digits (Sheet #4)
In this addition worksheet, students practice adding numbers in columns. Students complete the worksheet by solving twelve two-digit addition problems.
Curated OER
Column Addition - 4 Digits
Third and fourth graders write out the horizontal 4-digit addition problems into columns. Puils solve the 12 column addition problems.
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