Illustrative Mathematics
Illustrative Mathematics: 4.nf Money in the Piggy Bank
Alicia opened her piggy bank and counted the coins inside. Here is what she found: Aligns with 4.NF.A.
Other
Math Snacks: Atlantean Dodgeball
Ratio errors confuse one of the coaches as two teams face off in an epic dodgeball tournament.
PBS
Pbs Learning Media: Math + Arts: Musical Fractions
In this lesson plan, students will explore fractions through rhythmic sequences. Media sources and teaching materials are included.
NumberNut
Number Nut: Breaking Down Fractions
Discover fractions in the world around us in this lesson that also examines how fractions are divided. Detailed examples and pictures presented to explain this concept along with key vocabulary. A brief introduction to problem solving...
National Council of Teachers of Mathematics
The Math Forum: Intro to Fractions for Primary Students
This site from the Math Forum is a series of lesson plans with great ideas and an excellent Web site that uses virtual manipulatives with students.
ABCya
Ab Cya: Elementary Math: Virtual Manipulatives: Decimal Tiles
This is a fun way for students to explore and understand how parts make up a whole. Explore fractions, percentages and decimals with this game.
Other
Music Concepts Online: Notation: Basic Rhythm and Pitch
This site looks at rhythm, terms and concepts, which include rhythm, score, note (parts of and kinds), rests, tie. Great information.
University of Cambridge
University of Cambridge: Nrich: Egyptian Fractions
On this one page website find the solution to this Egyptian fractions challenge by using equivalent fractions and your problem solving skills.
Math Is Fun
Math Is Fun: Equivalent Fractions
This very basic website gives simple easy steps on how to find equivalent fractions with practice questions at the end. CCSS.Math.Content.3.NF.A.3.a Understand two fractions as equivalent (equal) if they are the same size, or the same...
BBC
Bbc: Bitesize Revision: Equivalent Fractions
This is an excellent place to learn about equivalent fractions. There is an interactive exploration of what equivalent fractions are. There is also an explanation and example of how to find equivalent fractions followed by a quiz.
Countries and Their Cultures
Countries and Their Cultures: Pende
The Pende occupy a territory that extends from the banks of the Lutshima, a tributary of the Kwilu, to the Kasai. The last colonial census (1959) indicated that there were 200,000 western Pende and another 40,000 Pende in Kasai, the...
Countries and Their Cultures
Countries and Their Cultures: Somalis
The Muslim Somalis of the Horn of Africa speak the Somali language and live in the Somali Democratic Republic (Somalia). There are also substantial numbers of Somalis in neighboring countries: the southern half of Djibouti, the eastern...
PBS
Pbs Learning Media: The Puzzle of the Amulet of Amagansett
In this video segment from Cyberchase, Wicked and Digit use what they know about fractions to figure out how many jewels are missing from the Amulet of Amagansett.
Calculator Soup
Calculator Soup: Mixed Number to Percent Calculator
Convert mixed numbers or mixed fractions to percents. The mixed number to percentage calculator finds the decimal equivalent by finding the decimal value of the fraction, adding the decimal to the whole number part of the mixed number,...
University of Georgia
University of Georgia: Intermath: Denominator
This one page website provides a definition for denominator and numerator. It also give examples.