*I made this list of helpful terms when researching Montessori Math lessons for your child…*

**Abstraction**: sequence of materials and activities with those materials that the child engages in

**Advanced Organizer:** Indicates the broad goal of the activity to the learner

**Associative Property: ** an example is 1+9=10 and 2+8=10

**Concentration: **The focusing of one’s energy, especially on a particular task

**Control of Error: **The aspect of a material that gives a child feedback, such as a final puzzle piece that will not fit in if other pieces have not been put in correctly.

**Directress: **The one who is observing, guiding, and preparing the child’s environment.

**Dynamic: **borrowing or carrying

**Independence: **To be dependent and responsible for oneself.

**Indirect Aims: **Goals that prepare children for future work such as the decimal system, left-to-right, top-to-bottom order (directionality), development of pincher grip, metric system

**Informal Diagnostic: **An observation to determine a child’s basic abilities.

**Isolation of Difficulty: **The design of the materials to focus the child’s attention on one concept at a time. All attributes of the lesson remain constant, except for the one that is the focus

**Lesson: **A prepared activity designed for a child to succeed at a task.

**Manipulates: ** the math materials

**Materials: **The items that the child will manipulate in a lesson.

**Mathematical Mind: ** mathematical structures or reasons for the order, sequencing, precision of mathematics

**Movement:** How a child transitions from unconscious to conscious absorbent mind, especially through the use of the hands.

**Number: ** the quantity can hold in your hand

**Numerals: ** written symbols

**Numeration: ** simply counting of one-to-one correspondence

One-to-One Correspondence: Matching, as is one object to another object

**Order: **Regularity of events during their usual time and items in their usual place.

**Point of Interest:** What makes a lesson engaging…

**Quantities: ** the number of

**Rote:** verbally counting in sequential order to a particular order

**Static: ** the same

**Three-Period Lesson:** A technique used to establish the names or attributes of materials including naming, recognition, and pronunciation.

**Touch Math: ** a concept of touching the number to learn value

**Variation:** Varying a tool or material in a lesson while using the same amount of steps, in order to keep the lesson interesting.