This short video and interactive assessment activity is designed to teach fifth graders about subtracting mixed numbers with common denominators.
This short video and interactive assessment activity is designed to teach second graders about subtracting one-digit numbers - word problems.
This short video and interactive assessment activity is designed to teach second graders an overview of subtraction (numbers up to 20).
This short video and interactive assessment activity is designed to teach third graders about subtraction: completing the subtraction sentence.
This short video and interactive assessment activity is designed to teach fourth graders about subtraction: completing the subtraction sentence.
This is a video and interactive assessment activity designed to help first graders learn about subtraction word problems up to twenty.
This short video and interactive assessment activity is designed to teach fifth graders about subtraction in grams.
This short video and interactive assessment activity is designed to teach fifth graders about subtraction in kilograms.
This video and accompanying interactive assessment practice was designed to teach Two-step Subtraction (Numbers to 100) - Word Problems to first graders.
This short video and interactive assessment activity is designed to teach second graders an overview of subtraction (numbers up to 10).
This short video and interactive assessment activity is designed to teach second graders about subtracting by counting backward with pictures.
This course features a video review and an assessment practice of subtracting by crossing out with pictures for word problems. It is aimed at first grade math students.
This task provides a familiar context allowing students to visualize multiplication of a fraction by a whole number. This task could form part of a very rich activity which includes studying soda can labels.
Students learn about providing healthcare in a global setting and the importance of wearing protective equipment when treating patients with infectious diseases like Ebola. They learn about biohazard suits, heat transfer through conduction and convection and the engineering design cycle. Student teams design, create and test (and improve) their own Ebola biohazard suit prototypes that cover one arm and hand, including a ventilation system to cool the inside of the suit.
In this task students must figure out how much fresh water you must add to get a particular salt concentration in aquarium water.
Summer Slugger is a fun, interactive, online resource that uses the game of baseball to help children maintain and reinforce their math and literacy skills.
This problem provides students with an opportunity to discover algebraic structure in a geometric context. More specifically, the student will need to divide up the given polygons into triangles and then use the fact that the sum of the angles in each triangle is 180_.
Parts (d) and (e) of this task constitute a very advanced application of the skill of making use of structure: in (d) students are being asked to use the defining property of even and odd functions to manipulate expressions involving function notation. In (e) they are asked to see the structure in the system of two equations involving functions.
The intent of this problem is to have students think about how function addition works on a fundamental level, so formulas have been omitted on purpose.
This short video and interactive assessment activity is designed to teach third graders an overview of addition (sums to 1,000).