Solution 22310: Correcting the Error Message Variable is Locked, Protected, or Archived on the TI-89 Family, TI-92 Family and Voyage™ 200.
...mily and Voyage 200 graphing calculator? The error, Variable is Locked, Protected, or Archived, appears when attempting to delete a locked program, equation, list, etc. from the var-link menu using a TI-89 family, TI-92 family or Voyage 200 calculator. Since the item to be deleted is locked, th...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/troubleshooting-messages-unexpected-results/22310
Solution 12156: Scaling the X-axis and Y-axis with the Same Units on TI-89 Family, the TI-92 Family, and the Voyage™ 200.
...ame when graphing a function on TI-89 family, the TI-92 family, and the Voyage 200? To make the scale on the x-axis and y-axis the same, use the ZoomSqr command. The ZoomSqr command displays the graph screen, adjusts the x or y window settings so that each pixel represents an equal width and heig...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12156
General Cell Questions
This StudyCards(tm) stack enables students to review general concepts regarding cells.https://education.ti.com/en/activity/detail/general-cell-questions
Vernier - Microscale Acid-Base Titration
In this activity, students' will use a pH sensor to determine the change in pH during a titration of a known concentration of NaOH and unknown concentration of HCl. Students' will determine the concentration of unknown HCl.https://education.ti.com/en/activity/detail/vernier--microscale-acidbase-titration
Vernier - Mix it Up: Combining Liquids of Different Temps
Students use the EasyTemp Probe to measure the temperature of hot and cold water before and after mixing. Students compare the mixing temperatures to a linear prediction. EasyData™ is needed for this activity.https://education.ti.com/en/activity/detail/vernier--mix-it-up-combining-liquids-of-different-temps
Diprotic Acid Lab and Easy Data
Maleic Acid gives an excellent diprotic acid titration curve showing both inflection points clearly for calculation of molecular weight.https://education.ti.com/en/activity/detail/diprotic-acid-lab-and-easy-data
Vernier - Freezing Temperature of Ocean Water
This activity makes use of the Temperature Probe to measure the temperature of water as it cools and freezes. Students' determine and compare the freezing temperature of fresh water and ocean water.https://education.ti.com/en/activity/detail/vernier--freezing-temperature-of-ocean-water
Problem-Solving Steps
Students learn the four steps of problem solving: Understanding the problem, making a plan, carrying out the plan, and evaluating the results. This activity helps students develop skills to solve problems.https://education.ti.com/en/activity/detail/problemsolving-steps
"Power"ful Patterns
Students investigate the relationship between multiplication with repeated factors and the use of exponents. Students will connect "powers of ten" to place value positions.https://education.ti.com/en/activity/detail/powerful-patterns
Number and Operations - 100 or Bust
Students explore the operations of addition, subtraction, multiplication, and division of whole numbers and integers.https://education.ti.com/en/activity/detail/number-and-operations--100-or-bust
Tiles in a Bag
Students explore probability and patterns in fractions, decimals, and percents by drawing tiles out of a bag.https://education.ti.com/en/activity/detail/tiles-in-a-bag
Random Remainders
Students explore the use of a calculator to investigate the relationship between divisors and remainders in whole-number division.https://education.ti.com/en/activity/detail/random-remainders
Picturing Percents
Students represent percents on a 10 X 10 grid. They use the grid and the calculator to generate patterns that lead to methods for calculating percentages.https://education.ti.com/en/activity/detail/picturing-percents
Ratios in Regular Polygons
Students use linear measurement and calculators to investigate the ratios between corresponding parts of regular polygons.https://education.ti.com/en/activity/detail/ratios-in-regular-polygons
Swing Thing
In this activity, students will construct a pendulum and create a motion plot for a swinging pendulum. They will also identify characteristics that affect a pendulum's motion.https://education.ti.com/en/activity/detail/swing-thing
An Average Lunch?
Students explore the meaning of the average (mean) value for a set of data.https://education.ti.com/en/activity/detail/an-average-lunch
Design a Quilt
Students learn to use pattern blocks to build a two dimensional design, and use the calculator to determine the value of the design.https://education.ti.com/en/activity/detail/design-a-quilt
Food for Thought
Students learn to count in tens up to 100. They also learn to build 2-digit numbers.https://education.ti.com/en/activity/detail/food-for-thought
Double Your Design
Students learn to use pattern blocks to investigate symmetry by building a design, making its mirror image, and using the calculator to determine the value of both the design made and its reflection.https://education.ti.com/en/activity/detail/double-your-design
Yards of Tin
Students solve a problem involving surface area of cylinders. They find the surface area and the amount of tin needed to make the cylindrical parts of ten long open pipes.https://education.ti.com/en/activity/detail/yards-of-tin
Median and Interquartile Range
In this lesson students are introduced to the median and, by taking the median of each half of the data, to quartiles and the interquartile rangehttps://education.ti.com/en/activity/detail/medians-and-iqrs-bc
Mean As A Balance Point
In this lesson, students calculate deviations from the mean, how far each value is above or below the mean. Students also focus on the balance point of a distribution, where the sum of the absolute deviations below the mean is equal to the sum of the absolute deviations above the mean.https://education.ti.com/en/activity/detail/mean-as-a-balance-point-bc
Quilt Blocks
Students will see how fractions, decimals, and percents are interrelated, then explore and learn how to convert between them. Students will also practice estimating.https://education.ti.com/en/activity/detail/quilt-blocks
Building Expressions
In this lesson students view expressions as objects in their own right and interpret the form and structure of an algebraic expression. Students focus on comparing expressions and establish a foundation for the definition of equivalent expressions. Students also consider how to verify that expres...https://education.ti.com/en/activity/detail/building-expressions-bc
What is an Equation?
In this lesson students begin by establishing the difference between an expression and an equation. Students then investigate expressions and equations to develop what it means to have a solution to an equation.https://education.ti.com/en/activity/detail/what-is-an-equation-bc