id_ int64 0 2.59k | text large_stringlengths 14 209 |
|---|---|
200 | When solving simultaneous equations, thinks they multiply both equations by the LCM of the coefficients of the term being eliminated |
201 | Believes substituting the starting value into an iteration formula immediately gives the solution |
202 | When asked to add fractions, multiplies instead |
203 | Thinks that dividing both numbers in a multiplication sum by the same power of 10 results in equal answers |
204 | Confuses scalene and equilateral triangles |
205 | Thinks there are 1000mm in a km |
206 | Thinks a cylinder is a prism |
207 | Confuses the terms faces and edges |
208 | Believes a composite function requires you to place the inner function next to the variable of the outer function instead of replacing it |
209 | When multiplying a vector by a fraction, adds the numerator to the top number of the vector, and the denominator to the bottom number of the vector. |
210 | Thinks the term in a sequence is double the position value |
211 | Believes displacement continues to increase even when returning to starting point |
212 | Solves for y=0 instead of given y-value when reading from a quadratic graph |
213 | Thinks there are 10 mg in a gram |
214 | Does not understand the 'less than' inequality notation |
215 | When asked for a specific term in a sequence, just gives the position number |
216 | Believes the smallest number in a set of numbers is always their highest common factor |
217 | When adding fractions, adds the numerators and denominators |
218 | Does not interpret a sloping gradient as a change in rate |
219 | Does not know that a right angle is 90 degrees |
220 | Only multiplies the first term in the expansion of a bracket |
221 | Thinks ratios are written as 1:total |
222 | Does not know the meaning of absolute value |
223 | Mixes up cubing with multiplying by 10 |
224 | Forgets to swap the sign of roots when placing into brackets |
225 | Confuses frequency of one class with cumulative frequency |
226 | Thinks rectangles have line symmetry in the diagonals |
227 | Ignores a more than question and just states one of the values |
228 | Divides rather than subtracts when given the command 'less than' |
229 | Does not account for scale on diagram |
230 | Thinks 1l = 1 cubic metre |
231 | Thinks we can't write an equivalent multiplication sum for a division sum by using a reciprocal |
232 | When dividing by a fraction, switches to multiplication without also using the reciprocal |
233 | Cannot estimate the relative volume order, for different objects |
234 | Subtracts instead of adds |
235 | Thinks adjacent angles are equal |
236 | Thinks corresponding angles sum to 180 degrees |
237 | Believes a line of best fit can be drawn on a scatter graph with no relationship or correlation |
238 | When finding the mean of the data in a stem and leaf diagram, thinks you find the mean of the stem numbers |
239 | Finds a common multiple but not the lowest common multiple |
240 | Misunderstands how to calculate the lower bound in a division, believes it is found by dividing both upper bounds |
241 | Thinks co-interior angles sum to 360 degrees |
242 | Thinks the hundred thousands column is the ten thousands column |
243 | Identifies a common factor but not the highest common factor |
244 | Believes the solution of mx + c = 0 is x = m |
245 | Does not realise that to maintain balance in an equation they must add or subtract the same amount from both sides |
246 | Does not think a kilogram is a unit of mass |
247 | Found the percentage but added it to 100% |
248 | Believes a pie chart makes 360% not 360 degrees |
249 | Does not understand a denominator represents equal parts |
250 | Believes a fraction cannot have a numerator of 0 |
251 | Includes a data point with the value, when asked to find the number of data points below a value |
252 | Does not think 'other' is an acceptable category for data |
253 | Does not recognise that all lengths on a cube are equal |
254 | Believes all triangle numbers are odd |
255 | Does not know the meaning of the word regular |
256 | Does not reverse the order of operations when solving an equation |
257 | Uses numerator as whole part of a fraction |
258 | When finding a missing number in a factor tree, multiplies by the factor given rather than dividing. |
259 | Thinks that when drawing the elevation, the bottom layer does not need to be included |
260 | Thinks cubing a number means adding 3 to that number |
261 | When multiplying just writes the numbers next to each other |
262 | Believes the intersection in a prime factor venn diagram does not contribute to the size of the number represented by a circle |
263 | Does not understand direction of North East, North West, South East and South West cardinal points |
264 | Subtracted rather than divided by a scale factor |
265 | Does not realise a quadratic must be in the form ax^2+bx+c=0 to be factorised |
266 | Identifies a letter as a common factor but doesn't identify a number as a common factor |
267 | Writes the variable before the coefficient in an algebraic term |
268 | Believes lines of reflection must be vertical or horizontal |
269 | When finding the distance between 2 points, believes the distance is the coordinate of the furthest point from origin |
270 | Thinks the term polygons only applies to shapes with more than 3 sides |
271 | Believes triangle numbers are formed differently to the correct way |
272 | When finding a missing side of a parallelogram given the area completes an extra step of dividing by 2 |
273 | Thinks 1l = 1 cubic centimetre |
274 | Confuses angle of a sector with the radius |
275 | When finding a point on a line, assumes the point is always the midpoint |
276 | Adds rather than multiplies when scaling up in direct proportion problems |
277 | Thinks pressure is force per unit volume |
278 | Believes a power of 2 has no impact on its value |
279 | Mixes up square rooting and cube rooting |
280 | Describes lines when asked to describe angles |
281 | Thinks that if two lines do not intersect on a diagram then they will never intersect and are therefore parallel |
282 | Does not understand that a point on the line of reflection will stay the same when reflected |
283 | Believes reflection in y = -x switches x and y coordinates |
284 | Believes the gradient of a speed-time graph is the speed |
285 | Lines up the digits incorrectly when doing an addition involving two numbers with a different amount of digits |
286 | when subtracting a fraction from an integer, just adds their absolute value and places a negative sign in front |
287 | Thinks y = ? is a vertical line through ? |
288 | Does not break down all factors in a factor tree to primes |
289 | Writes the numerator and the denominator the wrong way round in a probability |
290 | Thinks a decreasing sequence cannot be quadratic |
291 | Thinks a negative y value in a column vector means to move up rather than down |
292 | Converts fraction to percentage by putting % sign after the denominator |
293 | Does not understand that similar shapes sides must all have the same scale factor |
294 | Thinks that only the sides need to be equal for a polygon to be regular |
295 | Does not know the word and/or does not know the function of a compass |
296 | Ordered fractions by comparing denominators rather than using equivalent fractions. |
297 | Forgets you need a compass to draw arcs |
298 | Confuses a constant with a variable |
299 | When solving time problems, finds the difference in the hours and the difference in the minutes but then assumes the minutes will be added on to the number of hours |
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