This resource is part of Tools4NCTeachers.

In this lesson, students explore place value concepts with two-digit numbers as they build and discuss numbers with more ones than tens and more tens than ones.

This resource is part of Tools4NCTeachers.

Arrow cards are a great tool for developing an understanding of place value! In this lesson, students explore making numbers with place value materials and arrow cards. The develop the concept that the digits of a number represent amounts of tens and ones.

This resource is part of Tools4NCTeachers.

Arrow cards are a great tool for developing an understanding of place value! In this lesson, students explore making numbers with place value materials and arrow cards. The develop the concept that the digits of a number represent amounts of tens and ones.

This resource is part of Tools4NCTeachers.

In this lesson, students build fluency with recognizing and creating representations of numbers within 100. Students deepen their place value understanding as they work with ten frame cards. There are several variations built into the lesson for number ranges and response options.

This resource is from Tools4NCTeachers. This file contains a set of 8 tasks (including scoring rubric and support materials).  The tasks may be used for instruction or assessment.  The tasks focus around representing, interpreting and reading 3-digit numbers based on place value.Remix this resource to include student work samples or addtional tasks.

This resource is from Tools4NCTeachers.In this lesson, students play a game that requires the comparing and adding of numbers.  The game also provides an opportunity requires record numbers in both standard and expanded form.  Remix this lesson to provide extension activities or pictures of student work.

This resource is part of Tools4NCTeachers.

In this lesson, students work with double ten frame mats to represent and develop understanding of teen numbers.

This resource is part of Tools4NCTeachers.

In this task, the teacher pretends to have some groups of ten cubes and some leftover. The Student must state the total quantity. A scoring rubric is included. The task may be used for instructional or assessment purposes.

An interactive applet and associated web page that introduce the concept of a triangle. The applet shows a triangle where the user can drag the vertices to reshape it. As it is being dragged a base and altitude are shown continuously changing. Demonstrates that the altitude may require the base to be extended. The text on the page lists the properties of a triangle and lists the various triangle types, with links to a definition of each. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.