Curated OER
Arrays
In this arrays worksheet, students analyze 10 arrays. There are no directions on the page, but it is assumed that students would write the multiplication fact that matches each array.
Curated OER
Subtraction Decimals
In this math learning exercise, students subtract the decimals while taking special care to keep the decimals in the correct place value. The answers are also available.
Curated OER
Matter
Students complete a unit of activities to learn about states of matter and how to measure matter. In this matter lesson, students complete 8 lessons to learn about matter, its states, and how to measure matter.
Curated OER
Participation in Local and State Government
Students investigate the state and local levels of government. They demonstrate an examineing of government at these levels. The identification of officials and resources can be used for assessment.
Curated OER
Celestial Photography
Students practice photographic skills and gain an awareness of photography as a scientific tool.
Curated OER
Recycling and Reusing
Students complete the associated worksheets as they investigate ways to recycle and reuse common objects. They share ideas on reusing objects while practicing listening, speaking and note-taking skills.
Khan Academy
Khan Academy: Understand Subtraction as Adding the Opposite
Practice rewriting subtraction problems as equivalent addition problems. For example, 2-9=2+(-9). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Better Lesson
Better Lesson: More Than Two Numbers
The big idea of this lesson is that three (or more) numbers can be grouped together and added. The order of this grouping doesn't matter.
Mr. Martini's Classroom
Mr. Martini's Classroom: Mr. Martini's Classroom: Adding Objects
Practice addition facts 1 to 9 with numbers and pictures in this interactive game.
Better Lesson
Better Lesson: Any Order
The numbers in an addition number sentence (addends) can be added in any order and the sum remains the same.